[单选题] If we_____at the station by nine o' clock we must go now.

1、[阅读理解]【阅读理解】40. According to this passage, the Roman way of communication depended very much upon________.
A. the spelling system
B. high towers
C. arm movements
D. fine weather

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2、[阅读理解]【阅读理解】52. If you are a good investor,________in the stock market.
A. you can always make money
B. you can tell exactly when the stock goes up or down
C. you may sometimes lose money
D. your gambling is always safe

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3、[阅读理解]【短文改错】59.

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4、[阅读理解]【阅读理解】42. The African way of communication sent messages________.
A. by a musical instrument
B. over a very short distance
C. at a rather slow speed
D. in a special way

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5、[阅读理解]【阅读理解】43. The_____way of communication made use of visible signs.
A. Roman
B. French
C. American
D. African

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