单项选择题

It can be inferred that the author ______.

A．criticizes the importance of teachers in class
B．stresses the importance of interaction among students
C．is reluctant to teach in a classroom in the 21st century
D．is eager to reform the desk arrangements in his college

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单项选择题

We can infer from the first two paragraphs that the industrialists disregard environmental protection chiefly because ______.

A．they are unaware of the consequences of what they are doing
B．they are reluctant to sacrifice their own economic interests
C．time has not yet come for them to put due emphasis on it
D．it is difficult for them to take effective measures

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.