患者，男性，26岁，主诉吐血。在询问病史中，哪一项最不重要（） A.吐血的前驱症状

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

与一般的电子化服务相比，政府电子化公共服务的特点可以概括为（）。

A、广泛性

B、公益性

C、非盈利性

D、权威性

在日常生活中会接触到许多物质。 下列物质中属于酸性氧化物的是

A．硫酸铵

B．碘酒

C．二氧化碳

D．乙醇

下列不属于计算机应用领域的是( )。

A．科学计算

B．过程控制

C．金融理财

D．计算机辅助系统

根据《建设工程安全生产管理条例》，作业人员进入新的岗位或者新的施工现场前，应当接受（）。

A.专业培训

B.操作规程培训

C.安全生产教育培训

D.治安防范教育培训