[单项选择]The main role of some dinosaurs' developed primitive feathers is to_____.
A. fly
B. fight
C. keep warm
D. frighten the enemy

[单项选择]The main role of some dinosaurs' developed primitive feathers is to_____.


A. fly
B. fight
C. keep warm
D. frighten the enemy

[单项选择]According to Landes, the main reason that some countries are so poor is that ______.
A. they lack work ethic.
B. they are scientifically backward.
C. they lack rationality
D. they are victimized by colonists.

[单项选择]ROLE: UNDERSTUDY::
A. (A) chairman : general
B. (B) lawyer : magistrate
C. (C) position : benchwarmer
D. (D) physician : sufferer
E. (E) employer : employee

[单项选择]Some researchers have undertaken some psychological studies which prove that many children develop fears of ______ dangers.
A. imagination
B. imaginary
C. imaginable
D. imaginative

[单项选择]Nightingale played a great role in
A. the building of war hospitals.
B. the education of women.
C. the development of nursing.
D. the improvement of working conditions for women.

[单项选择]Governments today play an increasingly larger role in the ______ of welfare, economics, and education.
A. scopes
B. ranges
C. ranks
D. domains

[单项选择]

Advertising plays a major role in the distribution of goods from manufacturers to consumers.
It provides an effective way for sellers to inform buyers about products. Advertising thus helps manufacturers sell their products and benefits consumers by providing them with shopping information.
Advertising also helps the economy grow by stimulating demand for new products. Manufacturers spend much money to develop new products. Through advertising, they can speed up the process of creating a market for a product and so recover their costs more quickly. Fewer new products would be developed if manufacturers could not use advertising to help sell the products.
Advertisers include the expense of advertising in the sales price of a product. In some cases, advertising raises the price of a product. In other cases, advertising helps lower prices by creating the mass demand that supports mass production. Successful advertising makes many people want a product. By mas
A. and the producer lowers the price
B. with mass production.
C. before a new market has been created.
D. or the manufacturer has recovered the cost.

[单项选择]What important role did the diary really play


A. It corrected injustice.
B. It was as vivid as the movie "Titanic".
C. It proved what Masabumi said was true.
D. It made the Japanese believe what Masabumi had said.