Lately some scientists are experimenting _____ white mice to _____ this kind of medicine.

A. on, try on
B. with, test on
C. on, test out
D. with, carry out
C
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科目：高中英語(yǔ) 來(lái)源：0106 期末題 題型：單選題

Lately some scientists are experimenting _____ white mice to _____ this kind of medicine.
[     ]
A. on, try on
B. with, test on
C. on, test out
D. with, carry out

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科目：高中英語(yǔ) 來(lái)源： 題型：

Lately some scientists are experimenting ___________ white mice to ____________ this kind of medicine.

A.on,try on    B.with, test on   C.on ,test out   D.with,carry out

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