(Some fish) have whiskers, which are sensory organs used (for touching) and tast

游客2024-01-05  19

问题 (Some fish) have whiskers, which are sensory organs used (for touching) and tasting, and which (are helpful) when (are they) searching for food in sand and mud.

选项 A、Some fish
B、for touching
C、are helpful
D、are they

答案 D

解析
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