乘务员待乘卧床休息时间不得少于()，待乘人员必须在规定时间持IC卡到达待乘室签到，按指定房间休息，待乘室值班人员按规定办理待乘人员的入、出待乘室手续。
A．4h
B．6h
C．8h
D．12h
参考答案：A
解析：乘务员待乘卧床休息时间不得少于4h，待乘人员必须在规定时间持IC卡到达待乘室签到，按指定房间休息；段、车间值班干部每天必须检查乘务员待乘休息情况，铁路局应对管内各待乘室的管理工作进行不定期的抽查。
| 阅读理解。 |
| Here is a page from a magazine called Future. Read the following information about things that may happen in ten years. Cars will run on solar power (太阳能) and will be much cleaner. They will be much safer. For example, if you are too close to another car or if you are driving dangerously, your car will slow down or stop by itself. New cities will have to be built in the sea. Some cities on water will have two levels (层). People will live on the upper level; the lower level will be used for traffic, shops and factories. Biotechnology (生物技术) will make food better and healthier. Plants without insects or illnesses (病虫害) will be developed. The taste of fruit and vegetables will be better and food will be kept longer. Many new ways to cure (治愈) illnesses will be found. People will use products of genetic engineering (基因产品) to cure more illnesses. However, some new illnesses will appear. |
| 1. What will happen in the future according to the passage? |
[ ] |
| A. The air won't be much cleaner. B. Cars will run by itself without a driver. C. It'll be much more dangerous to drive a car. D. There'll be fewer accidents and less pollution (污染). |
| 2. Where will new cities have to be built in the future? |
[ ] |
| A. In the sea. B. In the sky. C. Underground. D. On the land. |
| 3. What will be made better and healthier by biotechnology? |
[ ] |
| A. Medicine. B. Toys. C. Food. D. Clothes. |
| 4. Genetic engineering will help doctors to cure more ______. |
[ ] |
| A. cold B. illnesses C. cancer D. headache |
| 5. Which is the best title (标题) of the passage? |
[ ] |
| A. Cars in the future. B. Get ready for the future. C. How to keep food longer? D. Where will people live in the future? |