模型法作为科学思维的一种方法，在科学研究和处理实际问题是具有普遍意义。分别用“○”、“●”表示质子数不同的原子，则下列气体物质的模型中表示化合物的是
A B C D
Where is your book report？ Did your dog eat it again？
No， it almost ，and then my computer just died on me!（ ）
不填；finishes
不填；finished
is； finished
was；finished
Jerry didn't pay me back， but he promised that he this Sunday．（ ）
must
could
would
should
I asked my father to me at the school gate at 6：30 so that we could visit Grandma together．（ ）
pick； up
turn；down
let； down
cheer； up
You don't like British breakfast， do you？
Not ． I just need some time to get used to it．（ ）
more
only
truly
exactly
Do you know the boy over there？
The one is holding a ball？ Oh， that's my neighbor Phil．（ ）
what
which
who
不填
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