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【单选题】
珊瑚的横截面具有A.
条带状结构
B.
同心圆结构
C.
波纹状结构
D.
无特征结构
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【简答题】_____7. Sometimes it is hard to choose a career. A smart decision can help you to pick a path that feels right today. You may also change the mind with time rolling on and re-decide your career path.
【单选题】It is hard to say what kind of person he is．Sometimes he is very friendly; at other times he ___ be very cold．
A.
can
B.
must
C.
will
D.
shall
【单选题】Sometimes, it is hard for one to handle the between one's duty and one's desires. [ ]
A.
conflict
B.
agreement
C.
satisfaction
D.
discussion
【简答题】a range of compare to .result in come about .keep on huge quantities of build up .be oppo...
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