英语听力：自然百科 虫虫兄弟—5（在线收听）

 Once the clothes make contact with human skin, so do the lice. They lay twice as many eggs as head lice, live twice as long and feed several times a day. If body lice drink blood infected with disease, they can pass that infection to humans through their droppings. The infected lice droppings dried to fine dust, which is easily blown about. The problem comes if you then scratch the irradiating bite and break the skin, rubbing in the infected dropping and allowing the disease to enter the blood stream. Body lice can help transmit killer disease like typhus if they get the chance. It might seem a grim start for the Smith and it's only 8 a.m..More uninvited guests arrive for breakfast. We are about to meet the resident's serial killer. On the surface everything looks fine, just a typical family breakfast. Look more closely and it's a different story. Attracted in by sugar left-overs and stood a little damage, at least you can see them. The Smith shared their table with some crib diners. These are green wibbles. Magnified several thousand times, they look like alien anteaters with strange brass bin mouth parts and club-like antenna.