题目内容

人们相信军队已经跨过边境线。

A. It is believed that the troops have crossed the border.
B. It is believed that the troops had crossed the border.
C. People believed that the troops have crossed the border.
D. It is believed that the troops have already crossed the border.

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据说我们的近海海域储藏有大量的石油。

A. It is said that we have plenty of oil off our coast.
B. People said that we have plenty of oil off our coast.
C. It is said that there is plenty of oil off our coast.
D. It is said that there is a plenty of oil off our coast.

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人们相信军队已经跨过边境线。

A. It is believed that the troops have crossed the border. B. It is believed that the troops had crossed the border. C. People believed that the troops have crossed the border. D. It is believed that the troops have already crossed the border.

据说我们的近海海域储藏有大量的石油。

胚胎的发育三个阶段为____、____、____。

人体的细胞可以分为 （） 、（） 两大类。

胎儿的意识状态都是什么？怎样影响胎儿的发展？

A. It is believed that the troops have crossed the border.
B. It is believed that the troops had crossed the border.
C. People believed that the troops have crossed the border.
D. It is believed that the troops have already crossed the border.

胚胎的发育三个阶段为、、。

人体的细胞可以分为（）、（）两大类。