题目内容

We have 211 bones including that of the tongue.

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His theory is far from perfect.

A book is like a gardencarried in the pocket.

The highest towers beginfrom the ground.

下面哪种溶剂的极性性最小

A. 无水乙醇
B. 75%乙醇
C. 丙酮
D. 乙酸乙酯
E. 三氯甲烷