剧烈运动时，肌肉中含量首先减少的物质是 ( )
A．ATP
B．CP
C．葡萄糖
D．脂肪酸
参考答案：B
I have studied very hard. But I still didn't get a good grade. It's really ______. [ ]
A. original
B. frustrated
C. frustrating
D. amazing
已诉诸法律追收贷款；五级分类为（）
A.关注
B.次级
C.可疑
D.损失
