英语听力：自然百科 虫虫兄弟—18（在线收听）

 In warm weather, maggots can eat 60% of a dead human body in less than a week. This lot will probably manage a mouse before midnight. A few meters away in the next room, Josh and Alex prepare for battle, and not just with their computer games, there's another opponent at large. A miniature heat seeking missile with a nose for blood. The chemicals in foot odor are set to be similar to limburger cheese. And mosquitoes can detect a right foot as far away as 20 meters. Like a soldier with infra red night scopes, it closes in and switches to a thermo heat seeking mode. Their hypodermic-like mouth parts which can pierce cow hide, probe under the skin to find a blood vessel. Only female mosquitoes bite, they need the protein in blood to lay eggs. And we rarely feel them feed, as their saliva ax is anesthetic. But if the nerve to their own stomach is cut, they will keep sucking blood until * burst. When they take blood, they inject saliva and their spit can carry a host of deadly diseases. Mosquitoes are responsible for one in every 17 human deaths. The only death Josh needs to worry about is one that affects his high school. Back in the Kitchen, tonight's meal is a real treat. Hurry up, come on! Chili con carne, with the few unexpected ingredients, courtesy of the house mates, without rice weevils.