[单项选择]Why does Canada depend less on nuclear energy than European countries Because ______.


A. it has not yet obtained the nuclear technology
B. the Canadians are strongly against the use of nuclear power
C. it has large coal reserves
D. it relies on the U.S. [or supply of electricity

[单项选择]Why does Canada depend less on nuclear energy than European countries Because ______.


A. it has not yet obtained the nuclear technology
B. the Canadians are strongly against the use of nuclear power
C. it has large coal reserves
D. it relies on the U.S. [or supply of electricity

[单项选择]Why will battery buses cost less than conventional buses in the long run


A. They will spread the capital cost over a long period.
B. They will be stronger and last longer.
C. They will use less fuel and cost less to maintain.
D. They will be charged at night when electricity costs less.

[单项选择]

The food you eat does more than provide energy. It can have a dramatic effect on your body’s ability to fight off heart disease, cancer, diabetes, high blood pressure, stroke, and weak bones. With remarkable consistency, recent research has found that a diet high in plant-based foods—fruits, vegetables, dried peas and beans, grains, and starchy staples such as potatoes—is the body’s best weapon in thwarting many health-related problems. These foods work against so many diseases that the same healthy ingredients you might use to protect your heart or ward off cancer will also benefit your intestinal tract and bones;
Scientists have recently estimated that approximately 30 to 40 percent of all cancers could be averted if people ate more fruits, vegetables, and plant-based foods and minimized high-fat, high-calorie edibles that have scant nutritional value. Up to 70 percent of cancers might be eliminated if people also stopped smoking, exercise
A. Calcium-rich food
B. Plant-based and starchy staples food
C. High-fat, high-calorie food
D. Vitamin D-rich food

[单项选择]Why does VOIP cost less


A. Because it uses separate service providers.
B. Because it needs less working stuff to offer service.
C. Because service is provided through e-mail.
D. Because service is charged monthly.

[单项选择]Solar energy causes
A) less pollution than oil C) the same pollution as oil
B) more pollution than oil D) financial problem


A. Solar energy causes
B. less pollution than oil
C. more pollution than oil
D. the same pollution as oil
E. financial problem

[单项选择]How many integers 72 greater than 10 and less than 100 are there such that, if the digits of n are reversed, the resulting integer is n+9 ？（）
A. 5
B. 6
C. 7
D. 8
E. 9

[单项选择]If k is an integer greater than 44 and less than 51，then which of the following could be the product of 11 and k ？（）
A. 565
B. 550
C. 500
D. 484
E. 440