更多"Many rare species of plants and ani"的相关试题:
[单项选择]Many rare species of plants and animals are threatened with______ with the worsening of environment and mass hunting.
A. migration
B. extinction
C. distinction
D. distraction
[单项选择]What plants do many insects tend to attack
A. Quiet plants.
B. Well-watered plants.
C. Healthy plants.
D. Thirsty plants.
[单项选择]Practically all species of animals communicate either through sounds or through a large repertory of soundless codes.
A. Simultaneously
B. Almost
C. Absolutely
D. Basically
[单项选择]If too many of these rare animals are killed, their kind will _______.
A. die away
B. die down
C. die out
D. die from
[单项选择]Many people believe that our species ______ threatened with extinction.
IA] is [BI are [C] are to be [D]used to be
[单项选择]Many people favor ______ more nuclear power plants.
A. to build
B. build
C. built
D. building
[单项选择]Overpopulation poses a terrible threat to the human race. Yet it is probably ______ a threat to the human race than environmental destruction.
A. no more
B. not more
C. even more
D. much more
[单项选择]Researchers discovered that plants infected with a virus give off a gas that （） disease resistance in neighboring plants.
A. contracts
B. maintains
C. prescribes
D. activates
