178.Therearefourbasicofbloodin

178. There are four basic _____ of blood in the human body. What do you belong to, A, B, AB or O?

A．kinds

B．sorts

C．types

D．Classes

登录免费查看答案和解析

相关试题

.
She fell off a ladder and ______Tony was in the next room, he managed to catch her in time.

A．because

B．even though

C．in case

D．unless

收藏答案/解析

.
Larry persuaded her that the robot wouldn't harm her or allow her ______.

A．to be harmed

B．to harm

C．harm

D．to be harming

收藏答案/解析

.
To be honest, I doubt ___ I'm making any difference to these boys' lives at all.

A．that

B．why

C．what

D．whether

收藏答案/解析

.
After getting my visa I was very excited because I __________ of this day for so long.
A, have dreamed B. dream C. had dreamed D. am dreaming .

收藏答案/解析

.
My ambition _____ for a firm that develops computer software when I grow up.

A．is to work

B．to work

C．working

D．is to be worked

收藏答案/解析