What did Clotfelter's study reveal about the extracurricular activities？
A. Most of them were exclusive to white and rich students only.
B. They contributed to the forming of interracial friendships.
C. They didn't help eliminate racial segregation as expected.
D. They seemed to be neglected by American school districts.
查看答案
A．Gas can be used in liquid and gas form.B．It will provide gas through long pipelines.
A. Gas can be used in liquid and gas form.
B. It will provide gas through long pipelines.
C. Gas is frozen into liquid and transported.
D. It will bring huge profits to the researchers.
听力原文：W: We should probably hit the road. It's going to take us two hours to drive home. Otherwise, we couln't make it before midnight.
M: You're right. I'll say goodbye to Michael and thank him for the treat.
Q: What can we infer about the two speakers from the conversation？
(13)
A. They are at Michael's.
B. They will treat Michael.
C. They are going to Michael's.
D. They will go home by subway.
A．WhenB．WhileC．IfD．Since
A. When
B. While
C. If
D. Since
What do we know about extracurricular activities in American high schools？
A. Students are united and work to reach the same goal.
B. There still exists prejudice and race discrimination.
C. Students from different races have equal access.
D. They are organized according to Allport's Theory.
微信支付 
支付宝支付