They took()measures to prevent poisonous gases from escaping in the chemical plant.
A.fruitful
B.beneficial
C.effective
D.influential
A.fruitful
B.beneficial
C.effective
D.influential
A.fruitful
B.beneficial
C.valid
D.effective
Most ______ measures involve data encryption and password.
A.security B.hardware C.display D.program
A.as
B.how
C.that
D.what
A.错误
B.正确
A.正确
B.错误
Companies that take measures to reduce waste and pollution______.
A.are more productive
B.are less successful
C.save money
D.spend more money
Most environmental problems exist because adequate measures for preventing them ______ taken in the past.
A.was not
B.were not being
C.were not
D.was no to be
One of the measures to keep a car within the speed limit is______.
A.to add less fuel to the engine
B.to limit the use of accelerator
C.to push down the accelerator pedal
D.to remove the pedal from accelerator
A.had been taken
B.will be taken
C.were taken
D.are taken