题目内容

—I regret ______ you John has been fired. —I can hardly believe my ears. He's such a fine

A. telling
B. having told
C. to tell
D. to have told

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I'm certain David's told you his business troubles. ______ , it's no secret that he owes a

A. However
B. Anyway
C. Therefore
D. Though

—Did Jack come back early last night？ —Yes. It was not yet eight o'clock ______ he arrived

A. before
B. when
C. that
D. until

设向量β可由向量组α1，α2，…，αm线性表示，但不能由向量组(I)α1，α2，…，αm－1线性表示，记向量组(Ⅱ)α1，α2，…，αm－1，β，则()．

A. αm不能由(I)线性表示，也不能由(Ⅱ)线性表示
B. αm不能由(I)线性表示，但可能由(Ⅱ)线性表示
C. αm可由(I)线性表示，也可由(Ⅱ)线性表示
D. αm可由(I)线性表示，但不可由(Ⅱ)线性表示

Section B
Directions: This section is to test your ability to understand short dialogues. There are 5 recorded dialogues in it. After each dialogue, there is a recorded question. The dialogues and questions will be spoken two times. When you hear a question, you should decide on the correct answer from the 4 choices marked A, B, C and D.
听力原文：W: May I help you？
M: Yes, I'd like to buy a pair of shoes for my son. These blue ones are on sale, aren't they？
W: Yes, they are 10% off.
M: Good. I'll take them.
W: Will that be cash or charge card？
M: Cash, please. If they don't fit, I can return them, can't I？
W: No, I'm sorry. Sale items cannot be returned or exchanged.
6. For whom will the man buy the shoes？
(6)

A. His son.
B. His daughter.
C. His wife.
D. Himself.