题目内容

To work __________with the machine,you must read the instructions carefully.

A. firstly
B. naturally
C. efficiently
D. Generally

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She told us briefly about how they succeeded in ________ the new product.

A. develop
B. to develop
C. developed
Developing

We had a(n) ________ with him about this problem last night.

A. explanation
B. impression
C. exhibition
Discussion

If you need more information, please contact us ________ telephone or email.

A. in
B. by
C. on
D. For

scala语言中一个函数可以定义在

A. 构造函数里
B. class内
C. object内
D. main函数内