Have you ever been ill? When there is illness, there can be no happiness. When you are ill, you are unhappy, for your body becomes hot, and there are pains all over your body. You don't want to work. You stay in bed, and are very sad. What makes us ill? Germs are everywhere. They are very small. You can't see them with your eyes but you can see them with a microscope (显微镜). They are like the seeds of plants, but they are much smaller. They are very, very small and there could be hundreds of them on a very small thing. Germs aren't found only in water. They are found in air and dust (灰尘), too. If you cut your finger, and if some of the dust from the floor goes into the cut, some of the germs will go into your finger. Your finger will become big and red, and you will have much pain in it. Sometimes the germs can go all over your body, and you will have pain everywhere.
单选题
What does the first part of this text tell us? A. Illness makes you unhappy and sad. B. If you lie on bed, you must be ill. C. If you don't want to work, you must be ill.
【正确答案】
A
【答案解析】第一段第二句话就明确指出：When there is illness，there can be no happiness. 随后的几句话进一步详细陈述疾病会使人不快乐。所以正确答案是A。选项B、C的因果关系都倒置了，应该是人病了以后，有可能要躺在床上，不想工作。B、C是错误的。
单选题
Which of the following is true? A. If things are very small and they can't be seen with your eyes, they must be germs. B. Germs are big enough to be seen with your eyes. C. Very small living things that may bring illness are called germs.
【正确答案】
C
【答案解析】文章第三段第三句话指出：You can't see them with your eyes...所以选项B是错误的。选项A指出凡是小得肉眼看不见的东西就是细菌。这个定义给得过于宽泛，没有点出细菌的特性。选项C给细菌下的定义是会造成疾病的微小生物，这个定义准确地概括了文章内容。所以正确答案是C。正确地回答这道题，需要一定的概括总结能力。
单选题
A microscope ______. A. is called a pair of glasses B. can make very small things look much bigger C. can help you are blind
【正确答案】
B
【答案解析】文章中并没有解释显微镜的特点、功能。只有一句话提到：You can't see them with your eyes but you can see them with a microscope。细菌很小，人的肉眼看不见，却可以借助于显微镜看到它们。那显微镜一定能使小的东西看起来大得多。这道题的正确答案是B。选项A说显微镜可以被叫做眼镜，我们可以依据常识判断这是错误的。选项c说显微镜可以帮助盲人，显然不符合文章内容，也不符合我们的常识。
单选题
Your patents won't let you drink dirty water because ______. A. they think it will bring illness to you B. water can't be drunk C. you are ill and unhappy
【正确答案】
A
【答案解析】文章第四段最后一句指出：Your father and mother will not let you drink dirty water, for it will make you ill. 脏水里面有许多细菌，细菌会使人生病，所以不能喝脏水。正确答案是A。
单选题
Which of the following is not true? A. Germs can be found both in water and air. B. If your finger isn't cut, there aren't any germs on it. C. Germs can go into your finger if your finger is cut.
【正确答案】
B
【答案解析】文章最后一段第一句话指出：Germs aren't found only in water. They are found in air and dust. 所以选项A的陈述是正确的，即水和空气中都可找到细菌。选项C：如果你的手指破了，细菌可能会进人手指，符合最后一段中提到的细节。这个选项也是正确的。选项B：如果你的手指不破，就没有细菌附着在手指上是错误的。错在介词“on”上。根据文章内容，介词“on”应该改为“in”。手指不破，细菌就不会进入手指。既然空气中、水中都会有细菌，人的手指一定会接触空气和水。所以即使手指不破，手指上也会附着细菌，这道题的正确答案是B。