【单选题】
9. The goal is to keep this land alive, to ______ animal population and keep it growing.
①
insist
②
keep
③
preserve
④
kill
【单选题】
19. Water will continue to be ____ it is today —next in importance to oxygen.
①
how
②
Which
③
as
④
what
【单选题】
As man moves into the space age, the study of biological rhythms is of increasing____________ to travellers, pilots, the armed forces and astronauts.
①
importance
②
important
③
importantly
④
import
【单选题】
Twenty-year-olds should not _____ to drive in China.
①
allow
②
be allow
③
be allowed
④
allowed
【单选题】
I ( ) hope you will come to china again soon.
①
sincerity
②
since
③
sincerely
④
sincere
【单选题】
Between 1990 and 2000, the population of the United States increased____________ 33 million people.
①
in
②
at
③
on
④
by
【单选题】
Most people come to realize that it is about time the government ____ further measures to control the population.
①
must take
②
is taking
③
takes
④
took
【单选题】
People found to their horror that two-thirds of the adult population in that area had _______ AIDS.
①
contacted
②
contrasted
③
contracted
④
compacted
【单选题】
Most people came to realize that it was about time the government ____ further measures to control the population.
①
must take
②
is taking
③
takes
④
took