1、【题目】When making modern cameras , people began to_______ plastics for metal.
选项：
A.surround
B.substance
C.stretch
D.substitute
答案：
D
解析：
暂无解析
1、【题目】Some lazy men would rather _______ than work.
选项：
A.indicate
B.declare
C.solve
D.starve
答案：
D
解析：
暂无解析
1、【题目】Thisriverissobigthatitisimpossibletobuilda_______underitwithoutmoderntechnology.
选项：
A.canal
B.tunnel
C.channel
D.cable
答案：
解析：
1、【题目】Sometimes it is very difficult to _______ some of the English words. Even the native speaker can not help.
选项：
A.decrease
B.create
C.define
D.delight
答案：
C
解析：
暂无解析
1、【题目】Ifyouhaveanyproblemsduringyourstudyhere,pleasedonot_______tocallmeforhelp
选项：
A.hesitate
B.despair
C.urge
D.request
答案：
解析：
1、【题目】Pinetreesareusuallybelievedto_______coldweather.
选项：
A.guard
B.accomplish
C.roar
D.endure
答案：
解析：
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