听力原文:M: I don’t know if I will be able to turn in my economics paper on time.
W: Haven’t you heard that the professor gave us a week’s extension on it?
Q: What does the woman mean?
(18)
A.She hasn't heard from the professor in a week.
B.The class has extra time to complete the assignment.
C.She only just found out about the economics paper.
D.She won't see the professor until next week.
第2题
生产矿井采掘工作面的空气温度,《煤矿安全规程》规定不得超过()
A.20℃
B.26℃
C.28℃
D.30℃
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