A:两人都做匀速直线运动
B:两人都不是做匀速直线运动
C:前2s内,小华跑较快
D:全程中,小华的平均速度大于小明的平均速度
A dog ____ (lie) under the tree. Don't wake him up!
将下列图片和句子配对。
① How many kites do you see? ____ A. I see four.
② I don't like chicken. ____ B. Me. neither.
③ I like rice and eggs. ____ C. Me. too.
用方框中所给单词或短语的适当形式填空。
middle, tall, high, short, a little
如图所示,手对桌子作用一个力F1,桌子也对手作用一个力F2,则下列说法正确的是( )