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【单选题】
From 8 pm to 10 pm, Susan can attend a movie, study, or talk with friends. Suppose that Susan decides to go to the movie but thinks that, if she hadn't, she would otherwise have talked with friends. The opportunity cost of attending the movie isA.
talking with friends and studying.
B.
studying.
C.
talking with friends.
D.
two hours of time.
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举一反三
【单选题】What kind of impact does technological revolution bring on students?
A.
It has made them more critical and creative.
B.
It has brought unprecedented challenges for students to meet.
C.
It has made more and more students be cut.
D.
It has converted teachers' pressures to students.
【简答题】When are EAP students more likely to read subject-related material?
【简答题】处理急性口服中毒昏迷想者不宜采取