取保候审保证金只能以人民币交纳，外币一律不能作为保证金交纳。

阅读理解。

     When David left college, he went to Australia. When he returned to England for a visit twenty years

 later, he decided to go back to his old college.  David was very glad when he found out that his old

 college teacher was still teaching there. He went to visit the old man,  and after they had an interesting

 talk,  the teacher went out to get something. While he was away, David saw an exam paper on the

 desk. He looked at the date on it and saw that it was given to the student a week ago. David picked the

 paper up and read it.

     When the teacher came back, David said to him, "Mr. Smith, I'm sure that these are exactly the same

 questions that you asked us in our exams twenty years ago! How is that possible?"

     "Yes, that's right," agreed the teacher. The questions are the same,   but the answers have changed."

1. David went to _____  after he left college.

    A. England                

    B. Australia

    C. another college        

    D. his teacher's office

2. David felt _____ when he found out that his college teacher was still teaching there.

    A. worried                

    B. sorry

    C. amazed                  

    D. happy

3. The students took the same exam _____.

    A. as David did twenty years ago

    B. when David' s teacher was away

    C. as David did a week ago

    D. when David read the paper

4. Can you guess why the teacher still used the same exam paper twenty years later?

    A. Times have changed, answers should change, too.

    B. Different students have different answers.

    C. The teacher tried to find an excuse for his being lazy.

    D. The exam paper was done by David and his classmates 20 years ago.

平坦型葡萄糖耐量曲线常见于()

A.甲状腺功能减退

B.腺垂体功能减退症

C.肾上腺皮质功能亢进

D.胃切除后

E.胰岛B细胞瘤

甲与乙投宿同一旅店，甲得知乙身携巨款，于是甲利用聊天机会在乙的茶杯中偷放安眠药，待乙熟睡时将其巨款拿走。甲的行为构成：

A．盗窃罪

B．诈骗罪

C．抢劫罪

D．抢夺罪

某排水管道工程采用承插式混凝土管道，管座为180°；地基为湿陷性黄土，工程沿线范围内有一排高压输电线路。项目部的施工组织设计确定采用机械从上游向下游开挖沟槽，用起重机下管、安管，安管时管道承口背向施工方向。
开挖正值雨季，为加快施工进度，机械开挖至槽底高程。由于控制不当，局部超挖达200mm，施工单位自行进行了槽底处理。
管座施工采用分层浇筑。施工时，对第一次施工的平基表面压光、抹面，达到强度后进行二次浇筑。
项目部考虑工期紧，对已完成的主干管道边回填、边做闭水试验，闭水试验在灌满水后12h进行；对暂时不接支线的管道预留孔未进行处理。
问题

改正项目部闭水试验做法中的错误之处。

运动员跳伞将经历加速下降和减速下降两个过程，将人和伞看成一个系统，在这两个过程中，

下列说法正确的是（  ）

A．阻力对系统始终做负功

B．系统受到的合外力始终向下

C．重力做功使系统的重力势能减小

D．任意相等的时间内重力做的功相等