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【判断题】
大气圈具有明确的上、下界。A.
正确
B.
错误
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【简答题】Which of the following is NOT true? A) When a person tries to help others, he must be clear that there is a real emergency. B) When a person tries to help others, he should know whether they are worth...
【简答题】康复精神医学服务的主要对象包括各类精神病和精神障碍的残疾者，其中大部分是________患者，且主要是________患者。
【单选题】It can be learned from the passage that ______.
A.
the person performing the acupuncture knows a lot about the of needles
B.
an operation now needs fewer needles than in the past
C.
acupuncture has existed in China for as long as 2,000 years
D.
few patients prefer acupuncture to chemicals
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