听力原文:M: I'll take two shirts.
F: Forty yuan, please.
How much is one shirt?
A. Forty.
B. Twenty.
C. Ten.
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听力原文:F: Shall I lock the language lab now before I go home?
M: Don't trouble. I'll check it myself later.
What will the woman probably do?
A. Leave for home.
B. Check the language lab.
C. Lock the language lab.
【C10】
A. while
B. before
C. after
【C7】
A. for
B. to
C. from