4.19Family members worked hard ()sure that they had enough food.
A. making
B. make
C. made
D. to make
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3.15Clearly, object of the game is to improve children’s math skills.
A. 不填;the
B. an;the
C. 不填;不填
D. the;不填
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5.9下列对文中四种颤动的理解,不正确的一项是( )
A. “章动”由月球离地球的位置变化而引起,是地轴的一种较短周期的“镜像摆动”。
B. “张德勒颤动”是地板的不规则运动,其轨迹并不是完美的圆,而是10码长的曲线。
C. “岁差”是太阳和月球对地球赤道部分的吸引造成的,是地轴的一种长周期运动。
D. “第四种颤动”与地球的大气、风暴及雪盖运动等有关,是地球外部因素造成的。
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4.17文中表现马周的出众才能的语句有哪些?(4分)
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4.20The light was so () that I had to cover my eyes.
A. bright
B. weak
C. soft
D. natural
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3.24.
A. on
B. from
C. with
D. to
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3.24. A. on B. from C. with D. to
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3.19 —Do you mind if I open the window?
---().
A. Yes, please
B. No, go ahead
C. No, please don’t
D. Yes, you’d better do
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2.26.
A. seen
B. realized
C. shared
D. developed
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5.24.
A. hardly
B. almost
C. much
D. far
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