Whencomestoresearchintoheartdi

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When ______ comes to research into heart disease and its effects on the body, we do not have adequate substitutes for the use of animals.

A．that

B．it

C．this

D．what

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----Why didn’t you see me wave to you then?
----Oh, If so. I must say sorry. I think I____ in the other direction.

A．looked

B．was looking

C．have looked

D．am looking

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---Which one will I choose?
---Well, you can take _______ of them; I’ll keep none.

A．both

B．all

C．any

D．either

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It’s ______ that the boy break away from the bad habit of sleeping at class.

A．said

B．suggested

C．known

D．reported

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Attention, please. This is the time capsule to the Anti-Japanese War. Please take ____ and ____ your belt. It’s leaving.

A．your seats, tie

B．place, fasten

C．your place, fasten

D．your time, fix

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The capsule began swing gently sideways as we lay _______.

A．relaxed and dreaming	B．relaxed and dreamed
C．relaxing and dreaming	D．relax and dream

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