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【单选题】
Which of the following underlined word is closest in meaning to the one in the sentence "They were a long way from the anti-viral medications and vaccines that can now help to stem the spread and promote a quicker recovery"?A.
Plants have three parts: roots, stems and leaves.
B.
I think my problems stem from childhood.
C.
Moreover, as he darned he smoked a pipe, the stem and bowl of which were red also.
D.
The measures are meant to stem the tide of illegal immigration.
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反馈参考答案：
举一反三
【单选题】若一棵完全二叉树中每个节点值为单个字符，其后序遍历序列为CDBFGEA，则其先序遍历序列是( )。
A.
ABECDFG
B.
CBDAFEG
C.
ABCDEFG
D.
无法确定
【单选题】若一棵完全二叉树中每个节点值为单个字符，其后序遍历序列为CDBFGEA，则其先序遍历序列是（ ）。
A.
ABCDEFG
B.
CBDAFEG
C.
ABECDFG
D.
无法确定
【单选题】2题目.doc 1. Whom is the letter addresssed to?
A.
dormitory manager
B.
Lin Jin’s father
C.
Lin Jin
D.
Lin Yi
【单选题】若一棵完全二叉树中每个节点值为单个字符,其后序遍历序列为 CDBFGEA ,则其先序遍历序列是( )。
A.
不确定
B.
ABECDFG
C.
CBDAFEG
D.
ABCDEFG
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