题目内容

从上皮组织起源的恶性肿瘤称为

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连接寡糖含有

A．50 minutes.B．30 minutes.C．25 minutes.D．15 minutes.

A. 50 minutes.
B. 30 minutes.
C. 25 minutes.
D. 15 minutes.

A) wholeB) unitC) partD) total

A. whole
B. unit
C. part
D. total

听力原文：W: Good evening, Professor David. My name is Susan Gray. I'm with the local newspaper. Do you mind if I ask you a few questions？
M: Not at all. Go ahead, please.
What is Susan Gray？

A writer.
B. A teacher.
C. A reporter.
D. A student.