下列哪个部位不是压疮最常见部位（） A.坐骨 B.足跟 C.骶骨 D.膝盖 E.股骨

阅读理解。

     The price of rice changes during the year.

     It is useful for rice farmers to know how the price changes, then they can sell their rice when the price is

high.

     Last year, the price of rice was very low in November. This was a bad time for farmers to sell their rice.

November, December, and January were all bad months.

     The best month for farmers to sell rice last year was April. July and August were also good times to sell rice.

     Between August and November, the price of rice went down every month. During other parts of the year,

the price went up and down.

     It was hard for farmers to guess how the price would change from month to month.

1. The underlined word "changes" in Paragraph 2 means _____.

A. becomes smaller

B. gets more

C. goes up and down

D. stays the same

2. The price of rice was the lowest in _____ last year.

A. January

B. April

C. July

D. November

3. In which months did the price of rice stay the same last year?

A. April and May

B. July and August

C. February and December

D. March and November

4. When could farmers probably guess the change in price during the year?

A. Spring

B. Summer

C. Fall

D. Winter

5. Which is the best title (题目) of the reading?

A. Seasons

B. Changing in Price of Rice

C. Months

D. Buying and Selling

西卡丝绸有限公司是一家中外合营企业，由来自美国、意大利、韩国和中国的6家公司共同举办。MIGA(多边投资担保机构)向这个合营者的股权投资提供了200万美元的担保，按照MIGA的规定，其不予以承保的风险为：

A．商业风险

B．货币转移险

C．战争和内乱险

D．违约险

古代史书记载：“大业元年(公元605年)，海师(水手)何蛮奏言：‘每春秋二时，天清风静，东望依稀，似有烟雾之气，亦不知几千里。’……令羽骑尉朱宽，人海访求异俗。何蛮言之，遂与蛮俱往，因到流求国，言不相通，掠一人而返。明年，帝夏令宽尉抚之。”这一记载反映的是( )

A．中国汉王朝与日本交往的开始

B．祖国大陆与台湾的联系

C．封建政府的侵略掠夺

D．中国移民对南洋的开发

主轴回转误差有哪些方面对加工精度有何影响

地面，将机翼防冰按钮置于ON位时会发生什么情况？

A、机翼防冰活门打开30秒，然后关闭

B、机翼防冰活门不打开

C、机翼防冰活门保持打开

D、以上都不对