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【单选题】

When you feel helpless and _______, just remember you are not _____ in the world because your friends are around you, including me.

A.
alone; alone
B.
lonely; lonely
C.
alone; lonely
D.
lonely; alone
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参考解析:
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举一反三

【单选题】病毒显著区别于其他生物的特征是 ( ) 。

A.
(1) 具有感染性
B.
(2) 独特的繁殖方式
C.
(3) 体积微小
D.
(4) 细胞内寄生