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【判断题】
社会支持理论通过研究社会支持网络来考查个体与其生态环境中其他系统之间的关系状态。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】经纪活动一共有三种方式分别是:
【单选题】Having arrived at the railway station, ______.
A.
it was found that the train had left
B.
the train had left
C.
the train was found left
D.
he found that the train had left
【简答题】经纪活动一共有三种方式分别为
【单选题】By the time we arrived at the railway station, the train _________. As a result, we missed the train.
A.
left
B.
is leaving
C.
had left
D.
leaves
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