作用原理与其他几种药物不属同一类的药物是A．SMZB．红霉素C．四环素D．氯霉素E．

生产注射剂时常加入适量活性炭，其作用为

A.吸附热原 

B.能增加主药稳定性 

C.脱色 

D.脱盐 

E.提高澄明度 

An annularity(日环食) is expected to cross China Friday afternoon, a researcher with the Purple Mountain Observatory under the Chinese Academy of Sciences said Wednesday.

The phenomenon, predicted to be the longest annularity of the next 1,000 years, can be seen in some areas of Yunnan, Sichuan, Guizhou, Shaanxi, Hunan,  Hubei,  Henan, Anhui, Jiangsu and Shandong provinces as well as Chongqing.

A partial eclipse(日偏食) would be seen in most of the rest of China, except for the northeast tip of Heilongjiang Province, said Cheng.

According to the National Aeronautics and Space Administration (NASA) of the United States, the annularity will begin in Africa and pass through the Indian Ocean, where the maximum duration(持续的时间) of annularity will reach 11 minutes and 8 seconds.

It will continue into Asia through Bangladesh, India, Myanmar and China. Cheng said the annularity will end at Jiaodong peninsula in Shandong Province, China.

The longest duration of the annularity on China’s territory would be 8 minutes and 17 seconds in Ruili, Yunan Province. A sunset with the annularity would be seen in some areas of Shandong, Guangdong and Taiwan, said Cheng.

An annularity occurs when the moon does not cover the entire disc of the sun so that a ring of light encircles the shadow of the moon.

Another expert said that though an annularity was not considered as wonderful as a total solar eclipse and was of little value in scientific research. It was interesting for the general public to watch the phenomenon, though.

60.The annularity mentioned in the passage is unusual because        .

A. it is expected to cross all over China

B. it begins in Africa and passes through Asia

C. it is of great importance in scientific research

D. it lasts the longest in the next one thousand years

61.From the passage we may conclude that people in Fujian can only enjoy the scene of      .

A. an annularity            B. a partial solar eclipse

C. a total solar eclipse           D. a sunset with the annularity

62.People       can enjoy the longest duration of the annularity on Friday.

A. in Africa    B. in India      C. in China     D. on the Indian Ocean

63.Which of the following is TRUE according to the text?

A. The annularity will end in Shandong Province.

B. The annularity can be seen by people all over China.

C. The phenomenon is an exciting one to the astronomers only.

D. A partial eclipse occurs when a ring of light encircles the shadow of the moon.

HBV抗原抗体系统

理气药的主要药理作用有（）

A.抑制胃肠运动

B.兴奋胃肠运动

C.松弛支气管平滑肌

D.抗休克

E.利胆作用

《信息交换用汉字编码字符集·基本集》中的汉字根据其使用频率分为两级。 ( )