-
(单词翻译:双击或拖选)
[00:00.00] Unit seven To Your Good Health
[00:-1.00]A sound mind is in a sound body.
[00:-2.00]Good health is our most valuable possession.
[00:-3.00]To stay health,we need to eat the right foods,
[00:-4.00]get enough sleep and exercise regularly.
[00:-5.00]Eating and drinking holds body and soul together-German Proverb
[00:-6.00]Section 1 New words and Ideas
[00:-7.00]What does fitness1 mean?
[00:-8.00]Danny's Presentation Ladies and Gentlemen:
[00:-9.00]Good morning!Thank you for coming to my presentation.
[00:10.00]Today I'll talk a little about what fitness means.
[00:11.00]Every day you use your body to do different things.
[00:12.00]Perhaps you walk to school.Perhaps you play with your friends.
[00:13.00]Perhaps you walk up the stairs.Perhaps you go shopping with your mother.
[00:14.00]Perhaps you do some jobs for your family.
[00:15.00]Your body works2 for and with your when you do these activities.
[00:16.00]Your body is a complex network of systems.
[00:17.00]It needs physical activity to work well.
[00:18.00]In fact,the more you use your body,the better it works.
[00:19.00]Fitness is a word that described how well you body is able to handle
[00:20.00]physical activities. Why do I need to be fit?
[00:21.00]When your body is physically3 fit,
[00:22.00]you will be able to do physical things for a longer time:
[00:23.00]You will be able to run and run at the seashore.
[00:24.00]do harder physical activities more easily:
[00:25.00]You will be able to lift heavier things.
[00:26.00]learn better:Being fit helps you to stay alert4 and focused on your lessons.
[00:27.00]sleep better:You will fall asleep at night easier and wake up feeling better.
[00:28.00]digest and use your food better:
[00:29.00]Your body has lots of ways to use the food that you eat.
[00:30.00]feel better and have more energy:Physical exercise acts like a stimulant5.
[00:31.00]It gives you energy-if you don't overdo6 it.Remember,keep everything in balance.
[00:32.00]have more fun:You will get better and better at physical activities,
[00:33.00]and have more and more fun playing games and doing things with your friends.
[00:34.00]The five areas of fitness:
[00:35.00]The different systems in your body need to be taken care of in special ways.
[00:36.00]If you are really 'fit',you will
[00:37.00]be able to twist and turn the parts of your body in many different ways.
[00:38.00]be able to run and play and work over longer periods of time.
[00:39.00]Your heart and lungs will be used to working hard for long periods of time.
[00:40.00]have strong muscles that can lift heavier things.
[00:41.00]be able to run,walk,or swim faster.
[00:42.00]find that everything in your body will work together better.
[00:43.00]Important informations:
[00:44.00]1.The heart is a muscle wihich pumps blood through blood vessels7
[00:45.00]to all the cells in our bodies.
[00:46.00]Our hearts beat continually8 every day of our lives.
[00:47.00]2.Blood feeds and removes waste from the cells.
[00:48.00]3.To keep our hearts healthy,we need to do enjoyable physical activities
[00:49.00]and eat healthy foods every day.
[00:50.00]What my heart looks likes:
[00:51.00]1.My heart is about as big as my fist.
[00:52.00]2.My heart beats about 90 times per minute(at rest).
[00:53.00]3.My heart is located in my chest,slightly to the left blood of the centre.
[00:54.00]4.Arteries9 are the blood vessels
[00:55.00]that carry blood from the left side of my heart to the rest of my body.
[00:56.00]5.Veins10 are the blood vessels that carry blood from my body
[00:57.00]to the right side of my heart.
[00:58.00]So everyone,do you see why I am so strong?
[00:59.00]I eat a lot,sleep well and get lots of exercise.
[-1:00.00]However,I need to eat more healthy foods
[-1:-1.00]-you know I eat too many donuts!Thank you very much for your time.
[-1:-2.00]I wish you all health and happiness!Now,any questions?
[-1:-3.00]Song
[-1:-4.00]Section 2 Meaning through practice
[-1:-5.00]C.Build your listening skills
[-1:-6.00]Listen to the recording11 of Jenny's trip to the doctor,
[-1:-7.00]and then answer the questions.
[-1:-8.00]Section 4 Reading for maning
[-1:-9.00]Danny's Advice
[-1:10.00]Good health is the most valuable possession a person can have,
[-1:11.00]but one can't take health for granted12.
[-1:12.00]There are three things that a person can do to help stay in good shape:
[-1:13.00]eat the right foods,get enough sleep,and exercise regularly.
[-1:14.00]Proper nutrition is important for good health.
[-1:15.00]Your body cannot function well unless it receives the proper kind of"fuel".
[-1:16.00]Avoid foods with lost of sugar and fat.
[-1:17.00]Eat plenty of foods that are high in protein,
[-1:18.00]like lean meat,fish,beans,and nuts[-1:19.00]Vegetables and fruits are especially important
[-1:20.00]because they provide necessary vitamins and minerals.
[-1:21.00]However,don't overeat.It is not healthy to be overweight.
[-1:22.00]Getting the proper amount of sleep is also important.
[-1:23.00]If you don't get enough sleep,you feel tired.
[-1:24.00]You have no energy.Over a long period of time,
[-1:25.00]a little amount of sleep may even result ina change of peronality.
[-1:26.00]Be sure to allow yourself from seven to nine hours of sleep each night.
[-1:27.00]If youu do,your body will feel strong,and your mind will be sharp.
[-1:28.00]Getting plenty of exercise is equally important.
[-1:29.00]Exercise firms the body,strengthens the muscles,
[-1:30.00]and prevents you from gaining weight.It also improves your heart and lungs.
[-1:31.00]If you follow a regular exercise program,
[-1:32.00]you will probably increase your life-span.
[-1:33.00]Any kind of exercise is good.
[-1:34.00]Most sports are excellent for keeping the body in good shape.
[-1:35.00]They are not only good for your body,
[-1:36.00]but they are enjoyable and interesting,too.
[-1:37.00]So,I would strongly advise you to keep a fitness program.
[-1:38.00]There are many things you can do to exercise,
[-1:39.00]such as:ride a bike;play basketball;play ping-pong or table tennis;
[-1:40.00]go for long walks;skip rope;dance;swim;play soccer;
[-1:41.00]do exercises to music;play catch.
[-1:42.00]All these activities can help you build the following.
[-1:43.00]1.Heart and lung endurance13
[-1:44.00]The heart and lungs are muscles.
[-1:45.00]They work much better as a system when they get lots of exercise.
[-1:46.00]They will be able to pump more oxygen to all of the other parts of your body
[-1:47.00]when they are in good shape.
[-1:48.00]When your heart and lungs work well,
[-1:49.00]every other part of your body works better.
[-1:50.00]2.Muscle strength
[-1:51.00]Muscle strength is how hard or how far you can move your body
[-1:52.00]or an object(e.g.kicking a ball,or jumping).
[-1:53.00]3.Muscle endurance
[-1:54.00]Muscle endurance is how long you can repeatedly14 move your body or an object.
[-1:55.00]4.Flexibility
[-1:56.00]Flexibility is how well you can stretch,
[-1:57.00]bend and twist the different muscles and joints15 in your body.
[-1:58.00]Well,now it is your turn to practise what has been suggested above.
[-1:59.00]If everybody were to eat the right foods,
[-2:00.00]get plenty of sleep and exercise regularly,the world would be a happier place.
[-2:-1.00]Appetite and Emotion
[-2:-2.00]When we feel hungry,it means our body needs food.
[-2:-3.00]When we feel angry or excited,some of us may eat too much,
[-2:-4.00]some of us may not want to eat at all.
[-2:-5.00]A long time ago,in England,some judges used to decide
[-2:-6.00]whether a person was telling the truth by giving him or her some dry bread.
[-2:-7.00]If the person could swallow the bread,
[-2:-8.00]it was a sign that the person was telling the truth.
[-2:-9.00]Though this seems rather strange and foolish,
[-2:10.00]it is indeed an excellent way of finding16 out the truth.
[-2:11.00]A person worrying about something has much difficulty swallowing anything dry.
[-2:12.00]He or she loses his or her appetite and does not want to eat
[-2:13.00]because he or she is worrying about something.
[-2:14.00]Some people are known as"emotion eaters".
[-2:15.00]They eat,not because they want to satisfy their hunger, [-2:16.00]but because they want to satisfy their emotions.
[-2:17.00]They eat to make themselves feel better.
[-2:18.00]What they believe to be hunger is something else altogether
[-2:19.00]-anger,boredom,fatigue,depression,or loneliness.
[-2:20.00]And so they eat,hoping that food will solve their problems.
[-2:21.00]But in the end,they only feel worse.
[-2:22.00]They gain weight and their emotional17 problems only grow larger.
[-2:23.00]Emotion eaters often turn to food right after having a bad experience.
[-2:24.00]For example,an emotion eater may receive bad news
[-2:25.00]about an exam they have just taken.
[-2:26.00]They feel stress and fear and turn to food
[-2:27.00]in an attempt to make their negative feelings go away.
[-2:28.00]This kink of eating is not healthy.
[-2:29.00]Many of those who eat like this become obese
[-2:30.00]and then have to deal with the emotional
[-2:31.00]and physical problems that go along with obesity18.
[-2:32.00]According to the book,
[-2:33.00]Constant Cravings:What Your Food Cravings Mean and How to Overcome Them,
[-2:34.00]"Emotion eaters must become aware of their motivations for wanting to eat.
[-2:35.00]You need this awareness19 in order to tell whether your stomach's actually empty
[-2:36.00]or you're upset about something and just want to eat to feel better[-2:37.00]New White House Chef
[-2:38.00]During the Clinton's term at the White House Between 1992 and 2000,
[-2:39.00]a new chef was hired to cook for President Clinton's family and guests.
[-2:40.00]The new chef,Walter S.Scheib III,was born on May 3,1954 in Oakland,California,
[-2:41.00]but grew up in Bethesda,Maryland.
[-2:42.00]He attended Walter Johnson High School
[-2:43.00]and the University of Maryland befor graduating with highest honors
[-2:44.00]from the Culinary Institute of America in Hyde Park,New York in August 1979.
[-2:45.00]The White House serves food to 70,000 guests a year.
[-2:46.00]Can you imagine cooking for all those people!
[-2:47.00]As the chief chef,Scheib is in charge of a full-time20 staff of five
[-2:48.00]and oversees21 a part-time staff of 20.
[-2:49.00]The former White House chef cooked in the traditional French way.
[-2:50.00]His foods tasted good,but contained a lot of fat.
[-2:51.00]Doctors say this is not healthy.
[-2:52.00]The new White House chef will have a medical doctor as an adviser22.
[-2:53.00]Dr.Dean23 Ornish is a heart specialist and writer.
[-2:54.00]He says foods can be low in fat and still taste good.
[-2:55.00]Hillary Clinton,the former First Lady,chose Mr.Scheib after tasting his cooking.
[-2:56.00]She wanted less fat in the White House food.
[-2:57.00]She also wanted to serve more fresh vegetables,
[-2:58.00]including vegetables grown without the use of chemicals.
[-2:59.00]She would also like the White House to serve more American food
[00:-1.00]A sound mind is in a sound body.
[00:-2.00]Good health is our most valuable possession.
[00:-3.00]To stay health,we need to eat the right foods,
[00:-4.00]get enough sleep and exercise regularly.
[00:-5.00]Eating and drinking holds body and soul together-German Proverb
[00:-6.00]Section 1 New words and Ideas
[00:-7.00]What does fitness1 mean?
[00:-8.00]Danny's Presentation Ladies and Gentlemen:
[00:-9.00]Good morning!Thank you for coming to my presentation.
[00:10.00]Today I'll talk a little about what fitness means.
[00:11.00]Every day you use your body to do different things.
[00:12.00]Perhaps you walk to school.Perhaps you play with your friends.
[00:13.00]Perhaps you walk up the stairs.Perhaps you go shopping with your mother.
[00:14.00]Perhaps you do some jobs for your family.
[00:15.00]Your body works2 for and with your when you do these activities.
[00:16.00]Your body is a complex network of systems.
[00:17.00]It needs physical activity to work well.
[00:18.00]In fact,the more you use your body,the better it works.
[00:19.00]Fitness is a word that described how well you body is able to handle
[00:20.00]physical activities. Why do I need to be fit?
[00:21.00]When your body is physically3 fit,
[00:22.00]you will be able to do physical things for a longer time:
[00:23.00]You will be able to run and run at the seashore.
[00:24.00]do harder physical activities more easily:
[00:25.00]You will be able to lift heavier things.
[00:26.00]learn better:Being fit helps you to stay alert4 and focused on your lessons.
[00:27.00]sleep better:You will fall asleep at night easier and wake up feeling better.
[00:28.00]digest and use your food better:
[00:29.00]Your body has lots of ways to use the food that you eat.
[00:30.00]feel better and have more energy:Physical exercise acts like a stimulant5.
[00:31.00]It gives you energy-if you don't overdo6 it.Remember,keep everything in balance.
[00:32.00]have more fun:You will get better and better at physical activities,
[00:33.00]and have more and more fun playing games and doing things with your friends.
[00:34.00]The five areas of fitness:
[00:35.00]The different systems in your body need to be taken care of in special ways.
[00:36.00]If you are really 'fit',you will
[00:37.00]be able to twist and turn the parts of your body in many different ways.
[00:38.00]be able to run and play and work over longer periods of time.
[00:39.00]Your heart and lungs will be used to working hard for long periods of time.
[00:40.00]have strong muscles that can lift heavier things.
[00:41.00]be able to run,walk,or swim faster.
[00:42.00]find that everything in your body will work together better.
[00:43.00]Important informations:
[00:44.00]1.The heart is a muscle wihich pumps blood through blood vessels7
[00:45.00]to all the cells in our bodies.
[00:46.00]Our hearts beat continually8 every day of our lives.
[00:47.00]2.Blood feeds and removes waste from the cells.
[00:48.00]3.To keep our hearts healthy,we need to do enjoyable physical activities
[00:49.00]and eat healthy foods every day.
[00:50.00]What my heart looks likes:
[00:51.00]1.My heart is about as big as my fist.
[00:52.00]2.My heart beats about 90 times per minute(at rest).
[00:53.00]3.My heart is located in my chest,slightly to the left blood of the centre.
[00:54.00]4.Arteries9 are the blood vessels
[00:55.00]that carry blood from the left side of my heart to the rest of my body.
[00:56.00]5.Veins10 are the blood vessels that carry blood from my body
[00:57.00]to the right side of my heart.
[00:58.00]So everyone,do you see why I am so strong?
[00:59.00]I eat a lot,sleep well and get lots of exercise.
[-1:00.00]However,I need to eat more healthy foods
[-1:-1.00]-you know I eat too many donuts!Thank you very much for your time.
[-1:-2.00]I wish you all health and happiness!Now,any questions?
[-1:-3.00]Song
[-1:-4.00]Section 2 Meaning through practice
[-1:-5.00]C.Build your listening skills
[-1:-6.00]Listen to the recording11 of Jenny's trip to the doctor,
[-1:-7.00]and then answer the questions.
[-1:-8.00]Section 4 Reading for maning
[-1:-9.00]Danny's Advice
[-1:10.00]Good health is the most valuable possession a person can have,
[-1:11.00]but one can't take health for granted12.
[-1:12.00]There are three things that a person can do to help stay in good shape:
[-1:13.00]eat the right foods,get enough sleep,and exercise regularly.
[-1:14.00]Proper nutrition is important for good health.
[-1:15.00]Your body cannot function well unless it receives the proper kind of"fuel".
[-1:16.00]Avoid foods with lost of sugar and fat.
[-1:17.00]Eat plenty of foods that are high in protein,
[-1:18.00]like lean meat,fish,beans,and nuts[-1:19.00]Vegetables and fruits are especially important
[-1:20.00]because they provide necessary vitamins and minerals.
[-1:21.00]However,don't overeat.It is not healthy to be overweight.
[-1:22.00]Getting the proper amount of sleep is also important.
[-1:23.00]If you don't get enough sleep,you feel tired.
[-1:24.00]You have no energy.Over a long period of time,
[-1:25.00]a little amount of sleep may even result ina change of peronality.
[-1:26.00]Be sure to allow yourself from seven to nine hours of sleep each night.
[-1:27.00]If youu do,your body will feel strong,and your mind will be sharp.
[-1:28.00]Getting plenty of exercise is equally important.
[-1:29.00]Exercise firms the body,strengthens the muscles,
[-1:30.00]and prevents you from gaining weight.It also improves your heart and lungs.
[-1:31.00]If you follow a regular exercise program,
[-1:32.00]you will probably increase your life-span.
[-1:33.00]Any kind of exercise is good.
[-1:34.00]Most sports are excellent for keeping the body in good shape.
[-1:35.00]They are not only good for your body,
[-1:36.00]but they are enjoyable and interesting,too.
[-1:37.00]So,I would strongly advise you to keep a fitness program.
[-1:38.00]There are many things you can do to exercise,
[-1:39.00]such as:ride a bike;play basketball;play ping-pong or table tennis;
[-1:40.00]go for long walks;skip rope;dance;swim;play soccer;
[-1:41.00]do exercises to music;play catch.
[-1:42.00]All these activities can help you build the following.
[-1:43.00]1.Heart and lung endurance13
[-1:44.00]The heart and lungs are muscles.
[-1:45.00]They work much better as a system when they get lots of exercise.
[-1:46.00]They will be able to pump more oxygen to all of the other parts of your body
[-1:47.00]when they are in good shape.
[-1:48.00]When your heart and lungs work well,
[-1:49.00]every other part of your body works better.
[-1:50.00]2.Muscle strength
[-1:51.00]Muscle strength is how hard or how far you can move your body
[-1:52.00]or an object(e.g.kicking a ball,or jumping).
[-1:53.00]3.Muscle endurance
[-1:54.00]Muscle endurance is how long you can repeatedly14 move your body or an object.
[-1:55.00]4.Flexibility
[-1:56.00]Flexibility is how well you can stretch,
[-1:57.00]bend and twist the different muscles and joints15 in your body.
[-1:58.00]Well,now it is your turn to practise what has been suggested above.
[-1:59.00]If everybody were to eat the right foods,
[-2:00.00]get plenty of sleep and exercise regularly,the world would be a happier place.
[-2:-1.00]Appetite and Emotion
[-2:-2.00]When we feel hungry,it means our body needs food.
[-2:-3.00]When we feel angry or excited,some of us may eat too much,
[-2:-4.00]some of us may not want to eat at all.
[-2:-5.00]A long time ago,in England,some judges used to decide
[-2:-6.00]whether a person was telling the truth by giving him or her some dry bread.
[-2:-7.00]If the person could swallow the bread,
[-2:-8.00]it was a sign that the person was telling the truth.
[-2:-9.00]Though this seems rather strange and foolish,
[-2:10.00]it is indeed an excellent way of finding16 out the truth.
[-2:11.00]A person worrying about something has much difficulty swallowing anything dry.
[-2:12.00]He or she loses his or her appetite and does not want to eat
[-2:13.00]because he or she is worrying about something.
[-2:14.00]Some people are known as"emotion eaters".
[-2:15.00]They eat,not because they want to satisfy their hunger, [-2:16.00]but because they want to satisfy their emotions.
[-2:17.00]They eat to make themselves feel better.
[-2:18.00]What they believe to be hunger is something else altogether
[-2:19.00]-anger,boredom,fatigue,depression,or loneliness.
[-2:20.00]And so they eat,hoping that food will solve their problems.
[-2:21.00]But in the end,they only feel worse.
[-2:22.00]They gain weight and their emotional17 problems only grow larger.
[-2:23.00]Emotion eaters often turn to food right after having a bad experience.
[-2:24.00]For example,an emotion eater may receive bad news
[-2:25.00]about an exam they have just taken.
[-2:26.00]They feel stress and fear and turn to food
[-2:27.00]in an attempt to make their negative feelings go away.
[-2:28.00]This kink of eating is not healthy.
[-2:29.00]Many of those who eat like this become obese
[-2:30.00]and then have to deal with the emotional
[-2:31.00]and physical problems that go along with obesity18.
[-2:32.00]According to the book,
[-2:33.00]Constant Cravings:What Your Food Cravings Mean and How to Overcome Them,
[-2:34.00]"Emotion eaters must become aware of their motivations for wanting to eat.
[-2:35.00]You need this awareness19 in order to tell whether your stomach's actually empty
[-2:36.00]or you're upset about something and just want to eat to feel better[-2:37.00]New White House Chef
[-2:38.00]During the Clinton's term at the White House Between 1992 and 2000,
[-2:39.00]a new chef was hired to cook for President Clinton's family and guests.
[-2:40.00]The new chef,Walter S.Scheib III,was born on May 3,1954 in Oakland,California,
[-2:41.00]but grew up in Bethesda,Maryland.
[-2:42.00]He attended Walter Johnson High School
[-2:43.00]and the University of Maryland befor graduating with highest honors
[-2:44.00]from the Culinary Institute of America in Hyde Park,New York in August 1979.
[-2:45.00]The White House serves food to 70,000 guests a year.
[-2:46.00]Can you imagine cooking for all those people!
[-2:47.00]As the chief chef,Scheib is in charge of a full-time20 staff of five
[-2:48.00]and oversees21 a part-time staff of 20.
[-2:49.00]The former White House chef cooked in the traditional French way.
[-2:50.00]His foods tasted good,but contained a lot of fat.
[-2:51.00]Doctors say this is not healthy.
[-2:52.00]The new White House chef will have a medical doctor as an adviser22.
[-2:53.00]Dr.Dean23 Ornish is a heart specialist and writer.
[-2:54.00]He says foods can be low in fat and still taste good.
[-2:55.00]Hillary Clinton,the former First Lady,chose Mr.Scheib after tasting his cooking.
[-2:56.00]She wanted less fat in the White House food.
[-2:57.00]She also wanted to serve more fresh vegetables,
[-2:58.00]including vegetables grown without the use of chemicals.
[-2:59.00]She would also like the White House to serve more American food
点击
收听单词发音
收听单词发音 |
1
fitness
|
|
| n.适合，适当，健康，健身 | |
参考例句： |
|
|
|
|
2
works
|
|
| n.作品，著作；工厂，活动部件，机件 | |
参考例句： |
|
|
|
|
3
physically
|
|
| adj.物质上，体格上，身体上，按自然规律 | |
参考例句： |
|
|
|
|
4
alert
|
|
| adj.机警的，活泼的，机灵的；vt.使...警觉 | |
参考例句： |
|
|
|
|
5
stimulant
|
|
| n.刺激物，兴奋剂 | |
参考例句： |
|
|
|
|
6
overdo
|
|
| vt.把...做得过头，演得过火 | |
参考例句： |
|
|
|
|
7
vessels
|
|
| n.血管( vessel的名词复数 )；船；容器；（具有特殊品质或接受特殊品质的）人 | |
参考例句： |
|
|
|
|
8
continually
|
|
| adv.不间断地，不停地；多次重复地 | |
参考例句： |
|
|
|
|
9
arteries
|
|
| n.动脉( artery的名词复数 )；干线，要道 | |
参考例句： |
|
|
|
|
10
veins
|
|
| n.纹理；矿脉( vein的名词复数 )；静脉；叶脉；纹理 | |
参考例句： |
|
|
|
|
11
recording
|
|
| n.录音，记录 | |
参考例句： |
|
|
|
|
12
granted
|
|
| conj.假定，就算v.（退一步）承认( grant的过去式和过去分词 )；（尤指正式地或法律上）同意；准许；让渡 | |
参考例句： |
|
|
|
|
13
endurance
|
|
| n.耐久力，忍耐力，耐久的时期，持续的时间 | |
参考例句： |
|
|
|
|
14
repeatedly
|
|
| adv.重复地，再三地 | |
参考例句： |
|
|
|
|
15
joints
|
|
| 接头( joint的名词复数 )； 关节； 公共场所（尤指价格低廉的饮食和娱乐场所） （非正式）； 一块烤肉 （英式英语） | |
参考例句： |
|
|
|
|
16
finding
|
|
| n.发现，发现物；调查的结果 | |
参考例句： |
|
|
|
|
17
emotional
|
|
| adj.令人动情的；易动感情的；感情(上)的 | |
参考例句： |
|
|
|
|
18
obesity
|
|
| n.肥胖，肥大 | |
参考例句： |
|
|
|
|
19
awareness
|
|
| n.意识，觉悟，懂事，明智 | |
参考例句： |
|
|
|
|
20
full-time
|
|
| adj.满工作日的或工作周的，全时间的 | |
参考例句： |
|
|
|
|
21
oversees
|
|
| v.监督，监视( oversee的第三人称单数 ) | |
参考例句： |
|
|
|
|
22
adviser
|
|
| n.劝告者，顾问 | |
参考例句： |
|
|
|
|
23
Dean
|
|
| n.(大学)院长，系主任，教务长 | |
参考例句： |
|
|
|
购买
在百度中搜索