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27. Several families of birds feed primarily ______ flying i

时间:2021-05-22 10:43来源:未知作者:admin 点击: 次

(单选题)8: 27. Several families of birds feed primarily ______ flying insects and have developed long wings and wide-opening mouths. A: on B: to C: with D: up

(单选题)8: 27. Several families of birds feed primarily ______ flying insects and have developed long wings and wide-opening mouths.

A: on

B: to

C: with

D: up

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27. Several families of birds feed primarily ______ flying i

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