题目内容

n. a tall plant like grass with a hollow stem that grows in or near water

A. property
B. pistol
C. reed
D. peak

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a. done without delay; vt. to make sb. decide to do sth. ; to cause sth.to happen

A. proclaim
B. refute
C. polish
D. prompt

n. an introduction to a book, especially one that explains the author's aims

A. refuge
B. pilot
C. pillar
D. preface

vt. to keep a particular quality, feature, etc. ;to make sure that sth. is kept

A. reinforce
B. regulate
C. preserve
D. recover

to make a small hole in sth, or to go through sth. ,with a sharp object

A. progressive
B. penetrate
C. practical
D. pierce

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