________ have an internal clock that controls the beating of our heart, and the ________ of our breathing.
#11165
A
Human being; steps
B
Humans; pace
C
Human beings; steps
D
Man; pace
推荐题目
You had better drink this , for it _______ vitamin C and it is good to your health.
#12449
A
includes
B
including
C
contains
D
containing
These flowers should not be watered too ______, once _____.
#12398
A
long; every other day
B
often; every fourth day
C
soon; every two days
D
frequently; each five days
(2013·高考陕西卷)My uncle hasn’t been able to quit smoking，but at least he has________.
#11933
A
cut out
B
cut down
C
cut up
D
cut off