HL Topic B3.3 Muscle and motility (id: 3dd4878ee)

本题目来源于试卷: HL Topic B3.3 Muscle and motility，类别为 IB生物学

[单选题]
2. Why do limb muscles 4byqovkn9:l,ifk 6- fact as antagonistic pairs to m0/v+-5omn5 phu e2vrxqz+rplove a limb?

A. One pushes, the other pulls.
B. Two muscles can exert more force than one.
C. Muscles can only exert force when they contract.
D. Limbs move in many different planes.


参考答案:  C


本题详细解析: 暂无

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