题目内容

I'll have to use a lot of English _____ I get the job.

A. if
B. what
C. why

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Why does Bill spend a lot of time to study English?

A. Because he is interested in English
Because he's apply for a job in an international company.

Is English a must for the job?

A. Yes, it is.
B. No, it isn't

分光光度法中不影响摩尔吸光系数的是( )

A. 溶液温度
B. 入射光波长
C. 液层的厚度
D. 物质的特性

硫酸铜溶液显蓝色是由于它吸收了白光中的( )

A. 绿光
B. 蓝光
C. 黄光
D. 紫光

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