Ms. Ravi has already conducted market research ______two new products.A、aroundB

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问题 Ms. Ravi has already conducted market research ______two new products.

选项 A、around
B、from
C、on
D、near

答案 C

解析 On is the preposition used with conduct research. Choice (A) means concerning. Choice (B) indicates source or origin. Choice (D) means close to.

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Ms.Ravihasalreadyconductedmarketresearch______twonewproducts.A、aroundB