______ has an internal clock that regulates the beating of our hearts, and the ______ of our breathing.
#13261
A
Mankind; step
B
Human; pace
C
Human being; step
D
Man; pace
推荐题目
It is high time that we started to consider what ________ we should take to reduce heavy smog caused by traffic fumes and other pollutions.
#11173
A
affection
B
attention
C
measures
D
advantages
It is clear that a computer works ______ faster than an abacus .
#14371
A
a lot
B
a lot of
C
little
D
very
Some people have called ________ the worst period ever for Pop Music.
#14361
A
1990’s
B
the 1990
C
the 1990’s
D
1990s
– I’m sorry I stepped on your toe; it was an accident. – It wasn’t! You did it ______.
#13584
A
by accident
B
at present
C
on purpose
D
at dusk
_________money has been invested to promote the traffic conditions of this city.
#11209
A
A plenty of
B
A large amount of
C
A great number of
D
A large sum