The heart is a（n） organ, It is of absolute importance to our body and life．
#11243
A
vital
B
energetic
C
living
D
lively
推荐题目
(2013·安徽蚌埠一次质检)Finding information in today's world is easy.The ________ is how you can tell if the information you get is useful or not.
#11741
A
knowledge
B
ability
C
competition
D
challenge
Mr. Wang told us that he would devote all the time he could spend _______ his oral English before going abroad.
#11654
A
improve
B
to improve
C
improving
D
to improving
Clare has offered a _______ of $ 100 to anyone who can find her lost cell phone.
#13300
A
benefit
B
cost
C
reward
D
price
Nowadays, few people develop the habit of keeping a supply of oil-lamps in the house in case of power ____.
#12101
A
lack
B
absence
C
failure
D
drop
The population of Africa is __________ so rapidly as to cause great concern of the whole world.
#12316
A
expanding
B
stretching
C
extending
D
spreading