子宫的功能有（）
A.输送精子的通道
B.孕育胎儿的场所
C.产生月经
D.正常容量为5ml
E.为一空腔肌性器官
参考答案：A, B, C
We couldn't catch up with the others because they________too long before us.[ ]
A. started
B. were starting
C. have started
D. had started
水产品呈味的核心是糖原、脂肪、牛磺酸。
