甲建筑公司与乙建筑材料公司同时签订了两个合同，合同中都没有规定履行的先后顺序，则在甲

如何进行情绪的自我调节与控制

Believe it or not，optical illusion can cut highway crashes.
Japan is a case in point．It has reduced automobile crashes on some roads by Rearly 75 percent using a simple optical illusion．Butst．ripes,called chevrons(人字形)，painted on ther rads make drivers think that they are driving faster than they really are，and thus drivers slow down.
Now the American Automobile Association Foundation for Traffic Safety in Washington D．C. is planning t。repeat Japan’s success．Starting next year，the foundati。n will paint cheyrons and。ther pattems of stripes on selected roads around the country to test how well the patterns reduce highway erashes．
Excessive(too great)speed plays a major role in as much as one fifth of all fatal traffic accidents， according to the foundation．To help reduce those accidents，the foundation will conduct its tests in areas where speed-related hazards(danger)are the greatest curves，exit slopes，traffic circles，and bridges．
Some studies suggest that straight，horizontal bars painted across roads can initially cut the average speed of drivers in half．However,traffic。ften returns to full speed within months as driVers become used to seeing the painted bars．
Chevrons，scientists say，not only give drivers the impression that they are driving faster than they reallv are but als0 make a lane appear to be narrower．The result is a longer lasting reduction in highway speed and the number of traffic accidents．

The advantage of chevrons over straight, horizontal bars is that the former______.

A. can keep drivers awake

B. can cut road accidents in half
C. will look more attractive

D. will have a longer effect on drivers

阅读下列文言文，完成小题。（12分）

伶官传序（节选）

欧阳修

呜呼！盛衰之理，虽曰天命，岂非人事哉！原庄宗之所以得天下，与其所以失之者，可以知之矣。

　　世言晋王之将终也，以三矢赐庄宗而告之曰：“梁，吾仇也；燕王，吾所立，契丹与吾约为兄弟，而皆背晋以归梁。此三者，吾遗恨也。与尔三矢，尔其无忘乃父之志！”庄宗受而藏之于庙。其后用兵，则遣从事以一少牢告庙，请其矢，盛以锦囊，负而前驱，及凯旋而纳之。

　　方其系燕父子以组，函梁君臣之首，入于太庙，还矢先王，而告以成功，其意气之盛，可谓壮哉！及仇雠已灭，天下已定，一夫夜呼，乱者四应，仓皇东出，未及见贼而士卒离散，君臣相顾，不知所归，至于誓天断发，泣下沾襟，何其衰也！岂得之难而失之易欤？抑本其成败之迹，而皆自于人欤？《书》曰：“满招损，谦得益。” 忧劳可以兴国，逸豫可以亡身，自然之理也。

小题1:解释下列划线字（4分，每小题1分）

（1）原庄宗之所以得天下（ ）   （2）函梁君臣之首（     ）

（3）泣下沾襟（     ）              （4）逸豫可以亡身（    ）

小题2:下列句子中划线虚词的意义和用法，相同的一组是（2分）

A．盛衰之理尔其无忘乃父之志

B．庄宗受而藏之于庙负而前驱

C．其后用兵其意气之盛

D．盛以锦囊而告以成功小题3:把划线句译成现代汉语。（3分）

抑本其成败之迹，而皆自于人欤？

小题4:“庄宗受而藏之于庙。其后用兵，则遣从事以一少牢告庙，请其矢，盛以锦囊，负而前驱，及凯旋而纳之”，这里连续用了9个动词，有何表达效果？(3分)

我国政府通过投资交通、能源、水利、环保、通信等关系国计民生的重要行业，改善和提高广大人民群众的生产生活条件。在此，政府维护公共利益所用的方式是

A．经济手段

B．行政手段

C．法律手段

D．道德感化

体育课时，你的同学中暑了，你可以（）

①扶他去医务室

②扶他去阴凉处

③用手指掐他的人中

④解开他的衣服扣子并给他喝水

A、①②③

B、①③④

C、①②③④

D、②③④