A.sustainedB.containedC.maintainedD.retainedI guess the……

单项选择题Very few plants will（）without water.

A.flourish
B.fade
C.stem
D.cultivate

单项选择题Years of（）labor had hardened his muscles.

A.survival
B.mental
C.restless
D.manual

单项选择题Fertilizer will（）the growth of these tomato plants.

A.accomplish
B.accelerate
C.accumulate
D.account

单项选择题Professor Collins was（）of the latest developments in physics because he had been in hospital for several months.

A.unconscious
B.negative
C.robbed
D.ignorant

单项选择题The old man did not seem to attach any importance（）the question.

A.to
B.with
C.towards
D.for

单项选择题There is need to check the（）of the report.

A.frequency
B.accuracy
C.emergency
D.efficiency

单项选择题Her pulse was so weak that the doctor had difficulty（）it.

A.inspecting
B.detecting
C.touching
D.contacting

单项选择题Accidents are of frequent（）on this motorway because the traffic is extremely heavy here.

A.arrival
B.proportion
C.scale
D.occurrence

单项选择题According to the weather（）, it's going to be fine today.

A.prediction
B.indication
C.provision
D.forecast

单项选择题It took millions of years for order to grow out of the（）of the universe.

A.adjustment
B.change
C.chaos
D.profile

单项选择题You should save your work often as a（）against computer failure.

A.sanction
B.precaution
C.shield
D.shelter

单项选择题If a man is easily taken in by emotional traps, he will not be able to make（）judgments.

A.sensitive
B.sentimental
C.sensible
D.sensational

单项选择题It is a type of desert bush that can （） extremes of temperature.

A.adapt
B.withdraw
C.withstand
D.shade

单项选择题Since many insects have already become（）to DDT, scientists have to look for some new insecticide

A.active
B.resistant
C.tough
D.gradual

单项选择题His parents no longer worry about him. He has a good job and can live（）his own now.

A.at
B.by
C.on
D.with