单选题If the experiment succeeds or fails, it will provide us with valuable experience which is essential to improving our future work.AIfBprovide usCexperienceDimproving
单选题
If the experiment succeeds or fails, it will provide us with valuable experience which is essential to improving our future work.
A
If
B
provide us
C
experience
D
improving
参考解析
解析：
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Online computer systems help us provide a() service to our customers. A.speedB.speedyC.speedily
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