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【单选题】
“Physical activities are good for health, so everyone should do physical activities.” This argument is based on_____________.A.
an opinion that is well-supported
B.
a fact that is well-known
C.
an opinion that is questionable
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举一反三
【单选题】在闭式齿轮传动中，软齿面齿轮常发生____破坏，故常按____进行设计计算，按_____进行校核。
A.
折断 接触强度 弯曲强度
B.
点蚀 弯曲强度 接触强度
C.
磨损 弯曲强度 接触强度
D.
点蚀 接触强度 弯曲强度
【简答题】The best way to know about the world affairs and local news is to read newspaper__________ (regular).
【简答题】请听下面一段材料，回答第1-3题。 1. What does the woman want to know? A. The best way to go to New York. B. The quickest way to go to New York. C. The cheapest way to go to New York. 2. How much does it cost the wom...
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