{01}Cloning an animal is a complex ________ that can go fatally wrong at any stage.
A.process
B.regulation
C.step
D.method
解析:这题考查词义辨析:process过程,regulation规定,step步骤, method方法,根据句意:克隆动物是个复杂的过程,每一步都可能出现致命的错误。选A。 本题选A。 {02}I could tell he was surprised from the ________ on his face.
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