—Oh, Betty, we will be having a buffet party next Saturday, and we’d like you to join us. —_______, Susan. What’s the occasion? What time do you want me to come?

第1题

Vit D的活性形式是()

A.Vit D₃

B.25-OH-Vit D₃

C.25,26-(OH)₂-Vit D₃

D.24,25-(OH)₂-Vit D₃

E.1,25-(OH)₂-Vit D₃

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第2题

Oh,sorry to trouble you.（)

A、That's okay.

B、No,you can't.

C、That's good.

D、Oh,I don't know.

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第3题

下列哪些基团可以增加分子的荧光效率()。

A.-OH

B.-NH

C.-COOH

D.-NO

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第4题

Oh my gosh! The rice cake almost ______ me.

A.blocked

B.choked

C.checked

D.chatted

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第5题

A: Julia said she sent you a birthday card yesterday、Have you got it？ B:Oh, really !

I haven' t _______my mailbox yet.

A、examined

B、charged

C、tested

D、checked

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第6题

可使α-去氧糖和α-羟基糖上的酰基水解，而不使内酯环开裂的是（)。

A.醇性KOH

B.醇性HCl

C.NaHCO3

D.Ba(OH)2

E.KOH水溶液

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第7题

We must hurry. Come to think of it, do we really have to go?()

We must hurry. Come to think of it, do we really have to go？（)

A、错误

B、正确

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第8题

We like the oil painting better, ______ we looked at it.

A、as

B、while

C、the moment

D、the more

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第9题

We enjoyed a quiet celebration on our own.()

We enjoyed a quiet celebration on our own.（)

A.正确

B.错误

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第10题

When we write, we must write as _____ as we can.

A.careful

B.carefully

C.more careful

D.more carefully

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第11题

We are told that it is () we are born that decides our nationality.

A.the country

B.anywhere

C.where

D.somewhere

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