单项选择题

A．He went hiking not long ago.
B．He hasn’t traveled around the world yet.
C．He will go when he has finished doing all his work.
D．He definitely does not want to go.
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单项选择题
A．He is conducting a survey.B．He is doing a search.C．He is trying to improve the Student Union.D．He is asking for directions.
A．He is conducting a survey.
B．He is doing a search.
C．He is trying to improve the Student Union.
D．He is asking for directions.
单项选择题
What can we learn according to the passage
A．The environment pollution is mainly due to the peoples' ignorance.
B．Any one who wants to protect environment will meet lawsuits.
C．If all the goals are fulfilled, It can make sure the environment can be improved immediately.
D．The environmental health issues not only involve cities, counties ,states but also federal government.
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