The children found a ______ of keys in the street.
A. reel
B. bunch
C. suite
D. group
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易燃易爆物质应存放于( )。
A. 试剂架
B. 普通冰箱
C. 通风橱
D. 铁柜
What does the verb form of the word "renovation" mean in ParA．1.（）
A. Reform.
B. Rearrange.
C. Retreat.
D. Restor
Scientists ______ that there is no animal life on Mars.
A. ensure
B. assure
C. resume
D. assume
64（）
A. with
B. to
C. for
D. in
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