下面关于胃溃疡的叙述不正确的是()
A.可见于任何年龄,青少年居多
B.慢性病程
C.周期性发作
D.节律性上腹痛
E.春秋季节易发作,容易复发
参考答案:A
物体做匀加速直线运动,初速度v0=2m/s,加速度a=0.1m/s2,则第3s末的速度是多少?5s内的位移是多少?
_____, but it is also a great way to lower the number of greenhouse gases in the air. [ ]
A. Not only a fun thing is it to do
B. Not only a fun thing to do it is
C. Not only it is a fun thing to do
D. Not only is it a fun thing to do