1、【题目】Thisriverissobigthatitisimpossibletobuilda_______underitwithoutmoderntechnology.
选项：
A.canal
B.tunnel
C.channel
D.cable
答案：
解析：
1、【题目】Many kinds of animals are believed to have _________from the earth
选项：
A.withdrawn
B.vanished
C.found
D.hung
答案：
B
解析：
暂无解析
1、【题目】When you fill in the application form, please use your_______ address so that we can contact you easily later.
选项：
A.policy
B.plain
C.permanent
D.principal
答案：
C
解析：
暂无解析
1、【题目】Withthehelpofthegovernment,alargenumberofpeople---_______afterthefloodin1991.
选项：
A.survived
B.suspended
C..suffered
D.subfected
答案：
解析：
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】Inordertoincreaseouroutput,weneedtoimportmoreproduction_______.
选项：
A.facilities
B.hens
C.votes
D.artists
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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