题目内容
The word "it" in the sentence "seawater directly beneath freshly formed sea ice has a higher salinity than it did before the ice appeared."(paragraph 4) refers to______.
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A．Allow children to find out their own mistakes.B．Point out children's mistakes whenev
A．$6.40.B．$8.60.C．$9.60.D．$9.30.
臀痈破溃后期大块腐肉已脱，疮口较深，收口较慢者，宜选用的内治方法是
听力原文： M: How long have you been working in the laboratory？
W: For almost three years, ever since I got my degree.
M: Your bachelor' s？
W: No, my master's. I didn't try to get a job until I had my master's degree.
M: What kind of research do you do？ Are you trying to develop new products or something like that？
W: No, that's done by another group in the lab. The group I'm with is doing basic research.
How long have the woman been working in the lab？
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