题目内容

兴奋传导速度最慢的心肌细胞是

A. 心房肌
B. 普肯耶纤维
C. 房室交界处
D. 左右束支

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Bees have different ways to make honey.

A. Right
B. Wrong
C. Doesn't say.

A good secretary is supposed to ______ telephone calls efficiently.

A. handle
B. break
C. forget

According to the text, orange is a color liked by ______.

A. women and men
B. women and children
C. women, children, and men

我国大肠癌最多发的部位在

A. 直肠
B. 升结肠
C. 横结肠
D. 降结肠

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