【单选题】
Air is very important, _________ we cannot live any more.
①
without that
②
no which
③
where
④
without which
【单选题】
The elderly people like those know them very well and give them respect.
①
which
②
who
③
that
④
where
【单选题】
If you will make us your lowest quotation for air-conditioner, we shall regard ____ as a personal favor.
①
it
②
you
③
your lowest quotation
④
air-conditioner
【单选题】
Not only are cars involved in most of the traffic accidents, but they also __________to the pollution of the air. .
①
contribute
②
promote
③
refer
④
matter
【单选题】
It is_________ to memorize something you dont understand.
①
easy
②
difficult
③
beautiful
④
wonderful
【单选题】
There can be no ( ) understanding without communication between people.
①
mutually
②
mutuality
③
mutual
④
mutualism
【单选题】
There are many ____ between the young and the old about their dreams.
①
difficult
②
differences
③
different
④
difficulties
【单选题】
Communication between a young couple is a(n) _____business.
①
sharp
②
dreadful
③
intense
④
delicate
【单选题】
When we breathe, the oxygen in the air ____ with our blood and gives us life.
①
fills
②
goes
③
takes in
④
mixes