1岁以下的婴儿，为防止因饥饿而产生酸中毒，可于麻醉前几小时喂少量的糖水A．2小时 B

高血钾的治疗措施不应包括下列哪一项

A．停止钾盐输入

B．输入镁制剂

C．阳离子交换树脂

D．透析疗法

E．输入钙剂

胶囊剂在贮藏时，其存放环境的温度不得高于（）℃

A、20

B、30

C、40

D、50

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．

What does the author say about straight,horizontal bars painted across roads（）

A. They are suitable only on broad roads.

B. They are falling out of use in the United States.

C. They are ignored in a long period of time.

D. They cannot be used successfully to traffic circles.

程序文件中，以“&&”开头语句是_________语句。

根据教育部《1999年全国教育事业发展统计公报》，全国普通中小学校舍建筑面积为 104070万平方米，比上年增加4747万平方米。其中危房741．4万平方米，危房率比上年下降0．3个百分点。普通初中理科实验设备、分组实验条件和图书藏量达标学校占初中总校数的比例分别是：71．5%、68．3%和73．4%，分别比上年提高3．2、3．7和4．3个百分点。小学理科实验设备、分组实验条件和图书藏量达标学校占小学总校数的比例分别是：44．4%、 38．6%和63%，分别比上年提高2．0、2．3和3．8个百分点。

该地区女性公务员的人数约为( )。

A．3．2万人

B．4．5万人

C．6．1万人

D．7．5万人