更多"The______ plants from the tropics a"的相关试题:
[单项选择]How did the people of Bali prevent fighting from breaking out
A. They shared the same borders.
B. The island was divided into seven kingdoms.
C. They made rules to punish those who wanted to fight.
D. Land was kept empty around each kingdom and no one lived there.
[单项选择]Every chemical change either results from energy being used to produce the change, or causes energy to be ______ in some form.
A. given off
B. put out
C. set off .
D. used up
[单项选择]Research discovered that plants infected with a virus give off a gas that______ disease resistance in neighboring plants.
A. contracts
B. activates
C. maintains
D. prescribes
[单项选择]Which of the following night flowering plants open slowly every night just at sunset
[单项选择]What do plants do when they are thirsty
A. They give out faint cries.
B. They make noises to drive away insects.
C. They extend their water pipes.
D. They become elastic like rubber bands.
[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]Chinese people tend to use plants to remedy disease.
A. diagnose
B. cure
C. evaporate
D. revise
[单项选择]Which of the following night flowering plants is poisonous
[单项选择]Many rare species of plants and animals are threatened with______ with the worsening of environment and mass hunting.
A. extinction
B. migration
C. destruction
D. extraction
[单项选择]Desert plants（） two categories according to the way they deal with the problem of surviving drought.
A. break down
B. fall into
C. differ in
D. refer to
[单项选择]All of the plants now raised on farms, have been developed from plants （）wild.
A. once they grew
B. they grew once
C. that once grew
D. once grew
[单项选择]______ more sunlight, these vegetable plants grow much better this year.
A. To receive
B. Having received
C. Receiving
D. Since receiving
[单项选择]Some plants are so sensitive ______ pollution that they can only survive in a perfectly clean environment.
A. from
B. against
C. to
D. with
[单项选择]Plants with roots appeared about ______ million years ago.
A. 430
B. 300
C. 330
D. 100
[单项选择]A) for C) of
B) from D) with
A. for
B. from
C. of
D. with
[单项选择]The visual part of the cortex is especially interesting because __________.
A. specific layers of neurons are sensitive to particular orientations of input Stimuli
B. much of the structure is genetically predetermined
C. horizontal lines are stimulated
D. vertical lines are stimulated
[单项选择]
Text 2
An industrial society, especially one as centralized and concentrated as that of Britain, is heavily dependent on certain essential services: for instance, electricity supply, water, rail and road transport, the harbors. The area of dependency has widened to include removing rubbish, hospital and ambulance services, and, as the economy develops, central computer and information services as well. If any of these services ceases to operate, the whole economic system is in danger.
It is this economic interdependency of the economic system which makes the power of trade unions such an important issue. Single trade unions have the ability to cut off many countries’ economic blood supply. This can happen more easily in Britain than in some other countries, in part because the labor force is highly organized. About 55 per cent of British workers belong to unions, compared to under a quarter in the United States. For historical reasons, Britain’s
A. take over other unions' jobs.
B. try to win over members of other unions.
C. protect their own members at the expense of others.
D. intend to represent workers in new trade organizations.
