题目内容

侧根的发生与根的顶端分生组织无关。

A. 对
B. 错

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由于侧根起源于内皮层，所以称为内起源。

A. 对
B. 错

A: I'd like to make an appointment_______ your manager. Do you think I could see him sometime this morning?B: Sorry, he's fully booked this morning.

A. with
B. in
C. for
D. at

A: Well, I've got a meeting from 2:00 to 4:00. Are you free tomorrow morning ?B: No ___________. Let's make it at 10:00 then.

A. trouble
B. problem
C. question
D. help

A: I'd like to change the appointment with Dr. Johnson from Tuesday to Thursday.B: I'm afraid he won't be ____________ on Thursday morning.

A. alone
B. able
C. available
D. asleep