单项选择题
The principal idea of this article is ______.
- A．the attraction of the sun and the moon
B．the sun, the moon and the wind
C．the changing tide
D．the factors affecting the tide
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相关考题
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单项选择题
According to this article, it is clear that the force of the moon
A．is not as important as that of the wind
B．is less than half as much as the sun
C．causes the alternate rise and fall of the surface of the seas
D．does not influence the rise and fall of the surface of the seas -
单项选择题
The word "tricks “at the end of paragraph 2 is closest in meaning to "______".
A．experience
B．cheating
C．skills
D．training -
单项选择题
It is reported that more dog bites occur in ______.
A．February
B．December
C．May
D．January
