A-A+
At the end of the passage Kevin Mitchell implies that______.A.the biological system is ve
问题详情
At the end of the passage, Kevin Mitchell implies that______.
A.the biological system is very delicate and its balance is easily broken
B.after a long and hard process, human genes come to what they are today
C.genetic mutations in the human body are developed in a casual manner
D.some people may have a higher risk of brain cancer than others
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