进行剧烈运动时,骨胳肌细胞呼吸作用的产物有()
A.CO2
B.H2O
C.C3H6O3
D.ATP
参考答案:A, B, C, D
甲、乙两名同学从四门选修课中各选修两门,则两人所选课程中恰有一门相同的概率为______.
We have to get to the bus station _______ 8 o'clock, or we'll be late.[ ]
A. for
B. in
C. by
D. on