题目内容

淋巴瘤种类多，分为恶性与良性。

A. 对
B. 错

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骨肉瘤好发于中老人，X线可见日光影征像。

A. 对
B. 错

1.He knew the__________truth about it.

A. all
B. whole
C. total
D. complete

2.He__________to me how the machine was used.

A. showed
B. said
C. proved
D. explained

3.Scientists have found that there is not any__________plant on the moon.

A. life
B. living
C. alive
D. live