单项选择题

In North America, college students ______.

A．study harder than they did in high school
B．study as hard as in high school
C．find college studies easier than high school work
D．find it easier to go to graduate school

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热门试题

单项选择题

According to the author, the main problem of our environment today is ______.

A．the increase of population
B．the limited energy resources
C．the more serious air pollution
D．the development of technology

单项选择题

The author's main purpose in writing this passage is most probably to______.

A．complain about people's slow actions to protect the environment
B．advise people to take actions to protect the environment
C．show himself to be an active environment protector
D．point out the bad effects of technology in protecting environment