多黏菌素的抗菌谱包括：A．立克次体和衣原体B．革兰阳性及革兰阴性菌C．结核杆菌D．革兰阳性菌特别是

Tom goes to school ______.

A．by bike

B．by bus

C．by car

A、A. with bike

B、B. on bike

C、C. by bike

D、D. ride a bike

听力原文：Is Tom at school today？

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A．Yes, he is at home.

B．He's very good.

C．Yes, he is.

______ riding to school, Mary usually goes to school on foot.

A．Without

B．Rather than

C．Instead of

D．In spite of

A．tall

B．taller

C．tallest

D．more tall

A、Never able to sit still, Tom craves adventure and the frontier life.

B、Tom's achievements in school are levels higher than the rest of his peers.

C、Tom's insight on human nature exceeds the understanding of other children.

D、Tom expresses deep sympathy for Aunt Polly.

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A．Students left high school earlier than usual.

B．The completion of high school bears relevance to qualification level in job markets.

C．Students must get high school diploma so as to be qualified in looking for jobs.

D．Compared with the past, young people nowadays are more incompetent.

We can infer from the second paragraph that______.

A．children can go to school earlier than they usually do

B．poor families can get compensation from the government

C．AAAS revealed that American children"s vocabularies are growing

D．there is nothing we can do to remedy educational disadvantages in the family

Tom ______ get up a little earlier tomorrow.

A、needs

B、need

C、need to

D、needs to