There are some players _________ on the playground, ________ John.
A:play; include
B:playing; including
C:play; including
D:playing; include
jiān dāo
shén me
liáng fēng
qián jìn
____
lián zhǎng
xínɡ dònɡ
nà er
xǐ shǒu
They don't like____.
仔细观察图(甲),说明力的作用效果不仅跟力的大小、方向有关,还跟力的____ 有关;观察图(乙)发现,将滑动变为____ 的方式可以减小摩擦;装潢师傅常用重垂线来判断图画挂得是否竖直,如图(丙)所示,这是利用了____ .