单选题 Questions 18～21 are based on the following dialogue between two friends talking about traveling.

单选题The text makes a point that goods will sell well if _________.

单选题If you take a glimpse at the map of the United States, you will find major cities scattered on her eastern and western coasts. If you take a (1) over these cities at night, you will have an illusion that there were (2) glittering on the horizon, (3) colorful and brighter than (4) in the sky. Starting from settlements of early (5) , villages and small towns have developed, (6) and modernized. Now over 70 percent of the nation's (7) reside in metropolitan areas (8) only one percent of the nation's land area. The American (9) house the might of her industries, activities of her (10) enterprises and daily (11) of her financial institutions. (12) , academic institutions and cultural facilities (13) locate in her major cities. (14) , they are the glittering diamonds on the crown of the U.S. empire. But the American cities become the (15) of their development. They are now decaying and dying. As they grow, residents are (16) constantly by overcrowded streets, traffic (17) , pollution, housing shortage, crime, drug indulgence and other urban (18) . People then try to seek a tranquil, clean and safe place to live in. A trend (19) "deurbanization" began at the turn of this century when residents of middle class—most of them were whites—move out of the (20) downtown to the suburbs and set up their residential zones.

单选题According to the passage water is important for all of the following, except______.

单选题Which of the following can best describe the tone of the passage?

单选题听下面一段对话，回答第14至第17题。

单选题Questions 11～14 are based on the following dialogue about Amy's view on date.

单选题Robin

单选题[此试题无题干]

单选题How should fairy stories be told to children according to the author?

单选题