修建小型构造物可与（）施工同时进行。A．桥涵 B．路基(土方) C．排水 D．挡土墙

将下列各句改为被动句。

1. We can finish the work in two days. 

     The work _____ in two days.

2. The children will sing an English song.

     An English song _____ by the children.

3. You needn't do it now.

    It _____ by you now.

4. Lucy sent me a New Year card last week.

    A New Year card _____ me by Lucy last week.

5. He made me do that for him.

    I _____do that for him.

6. I have given this book to the library.

    This book_____to the library by me.

7. Did he break the window yesterday?

    _____ the window _____ yesterday?

Give me _____.[ ]

A. two glasses of apple juice              

B. two glass of apple

C. two glasses of apple                      

D. two glass of apples

关于元素、原子和分子的说法，不正确的是[ ]

A．元素的种类决定于质子数

B．分子是由原子构成的

C．原子在化学变化中可以再分

D．原子的种类决定于质子数和中子数

不属于证券回购交易业务的主要场所的是( )。

A．上海证券交易所

B．深圳证券交易所

C．国务院和中国人民银行批准的全国银行间同业市场

D．场外交易市场

爆炸松扣是利用爆炸时的震动力和钻具（）相配合，迫使爆炸点附近的接箍丝扣松动。

A、正压力

B、自重力

C、正扭力

D、反扭力