内脏痛的主要特点是
A.刺痛
B.快而短暂
C.必有牵涉痛
D.定位不准确
E.对牵拉不敏感
参考答案:D
— Look! How long ________ like this?
—Three weeks! It’s usual here that rain _______ without stopping these days of the year.
A.has it rained; pours
B.has it been raining; pours
C.is it raining; is pouring
D.does it rain; pours
篮球放在水平地面上,篮球会受到弹力的作用,产生这个弹力的原因是()
A.地面的形变
B.篮球的形变
C.地面和篮球的形变
D.篮球受到的重力