下列句子中,没有语病的一项是( )
两球相向运动,发生正碰,弹性碰撞后两球均静止,于是可以判定,在弹性碰撞以前两球()
⑴When do you eat breakfast?____ A.It's warm and sunny.
⑵Can you make a snowman now?____ B.No,it isn't.
⑶What's the weather like today?____ C.I eat breakfast at 7: 15.
⑷What would you like to do?____ D.No,I can't.
⑸Is it windy and cold?____ E.I would like to go swimming.
与玉米种子相比,蚕豆种子没有的结构是( )