Question 16
A、They help farmers keep diseases in check.
B、Many species remain unknown to scientists.
C、Only a few species cause trouble to humans.
D、They live in incredibly well-organized colonies.
听前预测：快速浏览本部分的所有选项可知,由选项中的关键信息 species、 cause trouble to humans、 cause damage to people’s homes、 eating sugary food等可大致推测,这篇听力短文是关于某种生物的,而且这种生物具有一定的危害性,可能会给人类家庭带来破坏,听音时应重点关注与此相关的信息。
Scientists have identified thousands of known ant species around the world--and only a few of them bug humans. Most ants live in the woods or out in nature. There, they keep other creatures in check, distribute seeds and clean dead and decaying materials from the ground. ［16］ A very small percentage of ants do harm to humans. But those are incredibly challenging to control. They’re small enough to easily slip inside your house, live in colonies that number in the tens of thousands to the hundreds of thousands, and reproduce quickly. That makes them good at getting in, and hard to kick out. Once they settle in, these insects start affecting your home .In addition to biting ants, other species can cause different kinds of damage.［17］Some like carpenter ants, can undermine a home’s structure, while others interfere with electrical units. Unfortunately, our homes are very attractive to ants because they provide everything the colony needs to survive, such as food, water and shelter. So how can we prevent ants from getting into our homes?［l8］ Most important of all, avoid giving ants any access to food, particularly sugary food because ants have a sweet tooth. We also need to clean up spills as soon as they occur and store food in airtight containers. Even garbage attracts ants, so empty your trash as often as possible, and store your outside garbage in a lidded can, well away from doors and windows.
Question 16 What does the passage say about ants? 讲话中提到,很少一部分蚂蚁对人类有害,但那些蚂蚁都很难控制,它们小到可以轻松溜进你的房屋,在里面群居,数量可达数万到数十万只,且繁殖速度很快。由此可知项符合原文内容,为正确答案。选项D描述不准确,因为讲话者只是说蚂蚁是群居生活,并没有说它们的群居生活多么井然有序。选项A和选项B在讲话中未提及,可排除。