题目内容

遗传信息的储存场所是细胞核。

A. 对
B. 错

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粗面内质网和滑面内质网在电镜下的主要区别是根据其表面是否附有核糖体。

A. 对
B. 错

I'm hungry. Get me something __________.

A. eat
B. to eat
C. to be eat
D. for eating

It is difficult for a foreigner __________ Chinese.

A. write
B. to write
C. be written
D. written

The car is rather difficult __________.

A. to repair
B. to be repaired
C. repairing
D. being repaired