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Why are you always tired, do you know? First, if(如果) we can’t 31 well, we will(将) be tired. But we are often too 32 . We can’t finish our work in the day 33 we have to do it at night. We go to bed 34 and we get up early in the morning for school or work. Most people need at least(至少) eight 35 or some more. If we sleep for only five or six hours a night, we will be tired. Second, when we are ill, we will be tired. But we don’t know we are ill. So if you are always tired, maybe you are not so 36 . You’d better go to see a 37 . Third, maybe you eat 38 food, like hamburgers, meat, chocolate or coffee. If you are ill and tired after eating some food, please don’t eat it 39 to see if you are well. At last, if the air around you isn’t nice and clean, you will feel tired. So please open your windows often or go out for a walk and you will feel 40 . 小题1: A．sleep B．study C．drink D．eat 小题2: A．busy B．free C．lazy(懒惰的) D．angry 小题3: A．because B．if C．so D．although 小题4: A．early B．late C．quick D．quiet 小题5: A．days B．months C．hours D．minutes 小题6: A．ill B．nice C．good D．healthy 小题7: A．movie B．friend C．teacher D．doctor 小题8: A．too much B．too many C．much too D．many too 小题9: A．too B．again C．also D．once 小题10: A．better B．best C．good D．well
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【单选题】Which of the following is true about the U.S. Navy underwater listening network?.
A.
It is now partly accessible to civilian scientists.
B.
It has been replaced by a more advanced system.
C.
It became useless to the military after the cold war.
D.
It is indispensable in protecting endangered species.
【多选题】注意品质有（）
A.
注意的广度是人在同一时间内所能清楚的注意到的事物的数量
B.
注意的稳定性是注意长时间内保持在某一个对象和某一项活动上
C.
注意的分配是在同一时间内把注意分配到两种或两种以上的活动中去的能力
D.
注意转移是根据新的任务，主动的把注意从一个对象转移到另一个对象的特性
E.
注意的分散是无法集中心理活动
【单选题】— Is _____ true that Americans eat hamburgers and hot dogs every day? — No, that's not true, but they are both very popular foods in America. [ ]
A.
this
B.
anything
C.
it
D.
something
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