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【单选题】
近视眼的护理要点,正确的是A.
读书写字姿势要正确，眼与书30cm
B.
在直射阳光下看书，不要在光线暗处看书
C.
躺在床上看书
D.
连续看书写字半小时左右要做眼保健操
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反馈参考答案：
举一反三
【简答题】She had a lifelong commitment to f_____. (the belief and aim that women should have the same rights, power, and opportunities as men.)
【单选题】She told me that she had mailed part of the products and that the rest ______ in a few days.
A.
has followed
B.
have followed
C.
was following
D.
were following
【单选题】You can't imagine the trouble she _____ her missing child. [ ]
A.
had found
B.
had finding
C.
had to find
D.
has found
【单选题】The difficulty she had _____ her three children was solved by the local government. [ ]
A.
feeding
B.
fed
C.
to feed
D.
feed
【简答题】为了增大输出电阻采用 [填空(1)] 负反馈A. 电流
【简答题】为了 增大 输出电阻采用 负反馈。
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