[单项选择]The ozone layer plays as great a role in the stability of spaceship Earth as ______ the waters of its lakes, ponds, oceans, rivers, and streams.
A. do
B. does
C. play
D. are

[单项选择]The ozone layer plays as great a role in the stability of spaceship Earth as______ the waters of its lakes, ponds, oceans, rivers, and streams.
A. do
B. does
C. play
D. are

[单项选择]New data has （）that the damage to the ozone layer is not confined to the southern hemisphere.
A. ratified
B. confirmed
C. assured
D. approved

[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. Broadcasters and publishers do not want to make open bad news about their advertisers.
B. Stations are too much interested in seeking money from their advertisers.
C. Programs are not so appealing to more and more audience.
D. Stations will not broadcast enough educational programs.

[单项选择]What plays an essential role in making the nation prosperous according to this passage
A. Its money.
B. Its trade.
C. Its natural resources.
D. Its peopl

[单项选择]Today，( ) plays an important role in international trade and transport．
A. carrier
B. freight forwarder
C. shipowner
D. consignor

[单项选择]Who plays the role of the President in the film


A. Sigourney Weaver.
B. Kevin Kline.
C. Bill Mitchell.
D. Ivan Reitman.

[单项选择]What role do the plays in modem theatre play


A. They set a bad example for people not to appreciate fine language.
B. They teach people best pronunciations.
C. They introduce English classical literature to the audience.
D. They tell people how to speak badly.

[单项选择]Most of his great novels and plays were not published or known to the public ______ his tragic death in 1786.
A. even before
B. ever since
C. until after
D. until before

[单项选择]According to Nock, the role of husband plays a unique function in the lives of men because ______.


A. most men now choose to challenge normative marriage by making free choice
B. becoming a husband allows men achieve and sustain their masculinity
C. men show their determination in sustaining a key social institution through marriage
D. marriage expects different things of men from what it does of women

[单项选择]Linda plays ______ tennis. She also plays ______ piano.


A. the.../
B. /...the
C. the...the