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【单选题】
目前所知的最小细胞是A.
球菌
B.
杆菌
C.
衣原体
D.
支原体
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反馈参考答案：
举一反三
【单选题】If you want to be left alone on an elevator, the best thing to do is ______.
A.
to look into another passenger's eyes
B.
to avoid eye contact with other passengers
C.
to signal you are not a threat to anyone
D.
to keep a distance from other passengers
【单选题】His sister was left alone, with ______ to look after her.
A.
someone
B.
anyone
C.
everyone
D.
no one
【单选题】With ________ look of disappointment, he left the Student Union office. Without ________ knowledge of photographing, he missed the chance to be an editor of Babel.
A.
the, the
B.
a, a
C.
the, a
D.
/, the
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