外源性支气管哮喘,浆细胞产生使人体发生变态反应的抗体是 A.IgA B.IgG

题型:单项选择题

问题:

外源性支气管哮喘,浆细胞产生使人体发生变态反应的抗体是

A.IgA
B.IgG
C.IgE
D.IgM
E.IgD

考点:临床执业助理医师临床执业助理医师77
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背景材料:众多汽车品牌纷纷降价,“派立奥”与“奇瑞风云”两款家用轿车跌破了7万元大关。

辩题:物价下降,意味着商品的价值量减少。

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A new report says the number of foreign students at colleges and universities in the United States increased by three percent last year. This has been the first obvious increase since 2001.

American schools last fall had 583,000 foreign students. The record is 586,000. That was set in 2002 after many years of gains. But after that the numbers fell. The terrorist attacks on September 11th, 2001 led to more visa (签证) requirements. Now stronger efforts are being made to get more foreign students to study in the United States.

China remained in second place in front of South Korea but behind India, which sent almost 84,000 students last fall. The number of Japanese fell sharply by nine percent, although it remained in fourth place.

There were three percent drops from Indonesia and Kenya, the only African country in the top twenty last year. But there were obvious increases from Saudi Arabia, Nepal and Vietnam. The number of Saudi students more than doubled, rising to nearly eight thousand.

For a sixth year, the University of Southern California in Los Angeles had the most foreign students. Columbia University in New York was second. Other schools in the top five were New York University, the University of Illinois and Purdue University.

Unlike American students in other countries, who often choose history and language study, the leading area of study in the USA was business and management. Second was engineering.

The new report also says more than 220,000 Americans studied in other countries. That was during the 2005-2006 school year. It was a record number, and an increase of eight and a half percent from the year before. But only five percent of them stayed for a full year.

1 After 2002, the number of foreign students in the USA fell mainly because ____ .

A. Americans were worried that foreign students might attack them

B. few American universities welcomed students from abroad

C. their own countries could offer them a better education

D. it was harder for foreign students to get permission to study in the USA

2 Which of the following Asian countries has the largest number of students studying in the USA?

A. China.           B. Japan.           C. South Korea.  D. India.

3 Which subject is the most attractive to foreign students in the USA?

A. Business and management.       B. History.

C. Engineering.                        D. Language.

4We can learn from the passage that ____ .

A. Kenya is the only African country that has students in the USA

B. now foreign students are encouraged to study in the USA

C. the number of students studying in America always increases

D. the number of foreign students in the USA will keep increasing in the future

5 In which section of a newspaper could you most probably read this passage?

A. Culture.         B. Science.         C. Education.     D. Business.

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公积金委托贷款不得(),资金专户不得()。

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数控铣床的编程是尽量按照()法安排加工工序的。

A.工序集中

B.工艺分析

C.刀具集中

D.程序设计

题型:单项选择题

作业的地址空间指的是______ 程序所占据的空间。

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