Diseases that can be carried from one person to another are called infections. ___1___ do such diseases go round? Some diseases go round in one way，some in ___2___. For example, the germs that make you catch cold can travel ___3___ one person to another with a cough. They are breathed in with the air. That is why it is important to stay ___4___ people when you have a cold. It is a good idea to stay away from people who have cold, too. What seems to be a ___5___ may be the beginning of some more serious diseases.
Germs ___6___ from one person to another in many ways. For example, some diseases ___7___ by insects, such as flies and mosquitoes(蚊子). Larger animals can also carry diseases. People ___8___ get flu from chicken, pigeons, birds, dogs and cats. And ___9___ from Guozili. At one time many people got tuberculosis(肺結(jié)核) by drinking milk from cows that had the diseases. It is ___1___ to drink milk from cows that has a mad disease.
1. A. How B. WhyC. When D. Where
2. A. other B. the otherC. another D. others
3. A. atB. inC. fromD. with
4. A. inB. fromC. withD. among
5. A. coldB. coughC. feverD. headache
6. A. is traveling B. will travel C. has traveledD. travel
7. A. carry B. carriedC. are carriedD. have carried
8. A. can B. mustC. needD. have to
9. A. tuberculosis B. bird flu C. AIDSD. SARS
10. A. importantB. necessaryC. interestingD. vital
【答案與解析】
1. A。該題測試疑問副詞的用法，用科學(xué)推理法。從下句“有些以某種方式傳播，有些以另外的一種方式傳播”足能推測到該句的意思是“這些疾病如何傳播”.
2. C。該題測試代詞的用法。從句子的意思“一種……，另一種……”就能確定要選表示“另一”意思的代詞，這樣就可以排除首尾兩個選項;the other指僅有兩種傳播方式，這顯然與實際不符，也要被排除。
3. C?！皬囊粋€人傳給另一個人”要用連詞詞組from…to… 來表示。
4. B。當你患了感冒時，與別人呆在一起，就有可能把感冒病毒傳給別人，因此，in, with, among 都不能被選。
5. A。上面幾句談的都是感冒問題，本句應(yīng)該是對“感冒”這一疾病的總結(jié)。
6. D。“細菌能以許多方式從一個人傳給另一個人”屬客觀事實，因此要用一般現(xiàn)在時。
7. C。疾病不會自己傳播，需要借助昆蟲、蒼蠅、蚊子等才能傳播，因此，疾病作主語時要用被動語態(tài)。
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8. A。動物傳染給人類疾病，只是有可能性，不是“一定”被傳染，更不是人類“需要”被傳染，因此，只能選表示有某種可能性的情態(tài)動詞can。
9. D。這是一道常識題。眾所周知，SARS是由果子貍這種動物傳染的。
10. D。這也是一道常識題。喝了患有瘋牛病的牛產(chǎn)的奶是“致命的”，而不是“有趣的”，更不是“重要的”和“必要的”。
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