题目内容

What will the dentist treat the teeth?

A. Pull it out.
B. Give Judy a needle to numb the teeth.
C. Prescribe some medicine for her.
D. Fill the hole in the teeth.

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—”That was not easy, but I finally found the _______ ."

A. Doctor
B. Toilet
C. Water
D. Basket

— "Michelle, would you like to ____________ with us?”

A. go and watch TV
B. go for a cup of coffe
C. go and see a film
D. go clubbing

— “When will your staff arrive?”— “__________ .”

A. 10 minutes.
B. 30 minutes.
C. 45 minutes.
D. 1 hour.

构成肺泡的上皮细胞有（）和（），其中（）细胞具有合成与释放表面活性物质的作用。