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【单选题】
绿原酸（C 6 H 18 O 9 ）被誉为“第七类营养素”，它可以从栽种较广的（中药材）中提取。下列有关绿原酸的说法正确的是（ ）A.
一个分子中含有9个水分子
B.
在一定条件下，可燃烧生成CO 2 和H 2 O
C.
属于氧化物
D.
绿原酸分子中含有6个碳原子、18个氢原子、9个氧原子
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【多选题】What's the problem of the tire of Miss Ling?
A.
the tire is break
B.
The tire has a crack.
C.
the air pressure of tire is too low.
D.
The tire wear badly.
【简答题】看图对话。 Tom Lily Tom: Hello. Lily: ____________! Tom: Lily, today is my birthday! Lily: ____________! Lily: ____________? Tom: I am six.
【简答题】A．She saw a nail in the man's tire. B．The man shouldn't drive on the tire. C．The man may not need a new tire. D．She also needs air in her tires.
【单选题】Whistling the merry tune, ______
A.
the tire was fixed
B.
the tire is fixed by Jack
C.
Jack fixed the tire
D.
Jack fixed with the tire
【单选题】A certain tire company can produce tires at a cost of $22,500 per batch plus $9 per tire. The company can sell tires to the wholesaler at a cost of $20 per tire. If a batch of 15,000 tires is produced...
A.
$9.00
B.
$9.50
C.
$11.00
D.
$13.50
E.
$20.00
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