Those instruments such as the microscope and the telescope which are essentially aids to

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Those instruments, such as the microscope and the telescope, which are essentially aids to the eye, have certain features______.

A.in common

B.by common

C.under common

D.among common

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热搜:在Sb2S3,HgS,Bi2S3,As2S3,SnS等物质中,不能溶于Na2S溶