单词拼写 ( 10 分)

小题1:____________( 不幸地) , Jim didn’t escape from the big fire that day.

小题2: The ___________( 解释 ) he gave about being late for the meeting is unbelieving.

小题3: We can’t ___________( 容忍 ) the heat of the desert there.

小题4: On the top of the mountain we can see a wide ________( 多样 ) of flowers here and there.

小题5: Jim tried his best to ________( 使相信 ) him of his honesty.

小题6: His family had a _________( 争议 ) over money last week.

小题7:As we know, __________( 失败 ) is the mother of success.

小题8: The scientists are trying to make the ________( 污染的 ) river clean at present.

小题9: That salesman was _________( 控告) of killing a little girl 2 years ago.

小题10: Although he was seriously ill, he had a _________( 积极的；肯定的 ) attitude toward it.

加热炉进料调节阀要用气关阀，原因是（）。

A.动作快捷

B.方便操作

C.节约成本

D.保证安全