[单项选择]The United States and Canada are lands of ______ except for the Indians, who are the only true natives.

[单项选择]The United States and Canada are lands of ______ except for the Indians, who are the only true natives.

[单项选择]Why do lakes in the United States and Canada become dead lakes


A. Fish in the lakes die because acid rain deprives them of oxygen.
B. Fish in the lakes die from taking in poisonous substances released from the acids.
C. Fish in the lakes die from direct contact with accumulated acid in the water.
D. Air pollutants are dissolved in the water and thus kill the fish.

[单项选择]The Untied States and Canada are lands of ______ except for the Indians, who are the only true natives.
A. emigrants
B. immigrants
C. dwellers
D. inhabitants

[单项选择]The United States and Canada have agreed ______ in regard to the Great Lakes.


A. to eliminate swimming entirely
B. to limit boating and
C. to limit phosphates and detergents
D. to kill all algae

[单项选择]The Untied States and Canada are lands of______except for the Indians, who are the only true natives.
A. emigrants
B. immigrants
C. dwellers
D. inhabitants

[单项选择]The number of the United States citizens who are eligible to vote continues to increase.
A. encouraged
B. enforced
C. expected
D. entitled

[单项选择]The United States is ______ the south of Canada and to the east of Japan.


A. to
B. on
C. in
D. at

[单项选择]

Text 2 The domestic economy in the United States expanded in a remarkably vigorous and steady fashion. The revival in consumer confidence was reflected in the higher proportion of incomes spent for goods and services and the marked increase in consumer willingness to take on installment debt. A parallel strengthening in business psychology was manifested in a stepped-up rate of plant and equipment spending and a gradual pickup in expenses for inventory. Confidence in the economy was also reflected in the strength of the stock market and in the stability of the bond market. For the year as a whole, consumer and business sentiment benefited from the ease in East-West tensions. The bases of the business expansion were to be found mainly in the stimulative monetary and fiscal policies that had been pursued. Moreover, the restoration of sounder liquidity positions and tighter management control of production efficiency had also helped lay the groundwork for a strong expansion.
A. prevent payments deficit.
B. avoid inflationary pressures.
C. devalue the dollar.
D. increase the balance of trade.