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问题 多项选择题

焊丝在发放前，要求烘干员在不同牌号焊丝的端头涂不同的颜色标识，标识应在有标准牌的一端，焊丝的端头涂色标记不包括（）

A.红

B.绿

C.白

D.黑

答案

参考答案：C, D

填空题

棱长为1的正四面体，某顶点到其相对面的距离为        .
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选择题

从A、B、C、D四个选项中,选出与所给句子画线部分意义相同或相近并能替代的那一项。

1. There are several factories near the school.[ ]

A. many

B. quite a few

C. some

D. a lot of

2. We are certain it will be fine tomorrow.[ ]

A. exact

B. convincing

C. sure

D. certainly

3. We can think of ways to solve the problem.[ ]

A. think about

B. think over

C. come out

D. come up with

4. -Why was Miss Smith so sad?

    -She ran out of all the money and had no money to pay for her new dress.[ ]

A. lost

B. dropped

C. wasted

D. used up

5. -Long time no see Kangkang.

    -Oh,I have been away since last month.[ ]

A. a month ago B. for a month    C. after a month    D. until a month
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