闸门埋件下游侧二期混凝土与一期混凝土的接缝处或附近的混凝土表面有（）或随渗水有锈红色

我国《水污染防治法》作出了防止地下水污染的有关规定，包括( )。

A．禁止企业利用渗坑、渗井、裂隙和溶洞倾倒含有毒物质的废水，含病原菌废水和其他废弃物

B．禁止向水体排放油类、酸液、碱液或者剧毒废液

C．人工回灌补给地下水，不得恶化地下水质

D．地下工程应采取防护性措施，防止地下水污染

E．禁止向水体排放和倾倒工业废渣、城市垃圾和其他废弃物

Tim Becker and his neighbors are doing something to make their neighborhood a trouble-free area.

When Tim Becker gets in his car to go shopping, he doesn’t    1  drive to a store and back home. He always looks    2  up and down the streets of his neighborhood. He looks for anything

3  such as strange cars, loud noises,  4 windows, or people gathering on street comers.

Tim   5  to a neighborhood watch group in Stoneville, Indiana, USA. The neighborhood watch group   6 on the third Wednesday of every month. That’s   7  .Tim gets together with about ten of his neighbors to discuss community   8 .Members of the neighborhood watch group want to help the police   9  their homes, streets, and families safe.

Tina Stedman, president of   10  neighborhood watch group, agrees with Tim.“People seem to think that crime happens to other people but not   11 them. Well, it’s never happened to me,” she said,“but I don’t think anyone has the   12  to steal from other people or to make them feel   13 sitting in their own homes.”

Alex, a member of the group, said that all the neighbors  14  out for one another,“We 15  each other’s homes. We keep watch on the neighborhood at night and on weekends. Usually a 16    of four or five of us goes out together. If something doesn’t look right, then we call the  17  .For example, if we notice a group of teenagers who seem to be looking for   18 ,or someone destroying property, we report to the police.”

Alex feels the neighborhood watch groups   19  a lot in keeping crime down. Her husband Jim agrees,“Police are good people, but they can’t do   20  .”

1.A.yet                         B.still                           C.just                           D.rather

2.A.carefully　             B.clearly                      C.nervously                  D.coldly

3.A.familiar                  B.unusual                     C.expensive                  D.interesting

4.A.curtained                B.open                         C.old                           D.broken

5.A.attends                   B.belongs                     C.goes                          D.turns

6.A.meets                     B.quarrels                     C.sings                         D.searches

7.A.where                    B.why                          C.when                        D.how

8.A.politics                   B.wealth                       C.health                       D.safety

9.A.keep                      B.hold                          C.let                                   D.protect

10.A.its                        B.his                            C.their                         D.your

11.A.round                   B.on                                   C.about                        D.to

12.A.right                    B.chance                      C.courage                     D.mind

13.A.unlucky                B.unsafe                       C.disappointed              D.discouraged

14.A.set                       B.let                                   C.hold                          D.look

15.A.care                            B.enter                         C.watch                        D.manage

16.A.group                   B.set                            C.number                            D.crowd

17.A.judges                  B.police                       C.firemen                     D.doctors

18.A.work                    B.burden                      C.service                      D.trouble

19.A.produce                B.find                          C.get                            D.help

20.A.anything               B.evening                     C.harm                        D.wrong

工业上采用翅片状的暖气管代替圆钢管，其目的是( )。

A．(增加热阻

B．(节约钢材，增强美观

C．(增加传热面积，提高传热效果

D．(减小热量损失

《背影》描述了儿子对父亲前后态度的变化，这对刻画父亲的形象来说，所运用的表现方法是（）

A、环境渲染

B、侧面烘托

C、铺垫反托

D、对比反托

（）按照要求进行动车组性能试验和安全性检测，重点检查轮对踏面和车轴。

A、一级修

B、二级修

C、三级修

D、四级修