单项选择题

Chemistry is ______ as a science for it provides the ability to understand living systems at the molecular level.

A.deniable
B.reliable
C.indispensable
D.dependent
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单项选择题
物业服务定价成本的构成中，不属于秩序维护费的是（ ）。
A.器材装备费 
B.监控设备费
C.由物业服务企业支付的服装费 
D.安全防范人员的人身保险费
单项选择题
The task now for Scotland is to win their remaining______matches before the competition starts.
A.friendly
B.trendy
C.stylish
D.fashionable
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