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【单选题】
对滚动轴承规定了不同的直径系列如轻型、中型、重型等，不同直径系列轴承的区别在( )。A.
内圈的内径相同时，外圈的宽度不同
B.
外圈的外径相同时，内圈的内径不同
C.
内圈的内径相同时，滚动体的直径大小不同
D.
内圈的内径相同时，滚动体的数目不同
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【简答题】蒿芩清胆汤的功用是（）、（）；主治（）证。
【单选题】He the book to the library if he it tomorrow.
A.
returns; finishes reading
B.
will return; will finish to read
C.
will return; finishes to read
D.
will return; finishes reading
【单选题】I don‘t know if it __tomorrow. If it __ ， I won‘ t go.
A.
will rain； rains
B.
will rain； will rain
C.
rains； rains
D.
rains； will rains
【单选题】Will it matter if you don' t take your breakfast? Recently a test was given in the United States. Those tests included people of different ages, from 12 to 83. During the experiment, these people were...
A.
breakfast has great effect on work and studies
B.
breakfast has much to do with people's health
C.
a person will work better if he has simple breakfast
D.
breakfast only affects those who work with their brains
【单选题】What's the bad effect of the way the Regular Readers read Harry Potterl
A.
It will promote too many visits to the places the book mentions.
B.
It will discourage people from reading real masterpieces.
C.
It will foster reading as part of a fast-food culture.
D.
It will cause a confusion of faddism with classics.
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