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更多“Price-elastic demand 有价格弹性的需求（…”相关的问题
A.leave; for
B.leave; to
C.left; to
D.to be left; for
A.invitation
B.challenge
C.request
D.demand
A.general
B.total
C.short
D.response
A.enable
B.enabling
C.enables
D.able
_between supply and demand, but it is no easy task
A) equation B) formula C) balance D) pattern
The passage tells us that if present trends continue______.
A．fewer men will find fall-time employment
B．Britain's economy will lose its manufacturing base
C．there will be more part-time jobs for women
D．women will demand higher pay and better benefits
Some years ago safety rules_________．
A.were put forwardDue to scientists’recommendations
B.came into being as a result of the workers’demand
C.were introduced because quite a number of people were kiHed or seriously in-jured
D.were effective enough to protect workers and customers
"this" in paragraph 4 probably refers to ______
A．The tusks of male elephants are usually large and heavy.
B．Tusks in good condition are in great demand, and may sell for as high as two thousand dollars or more.
C．Elephants are perhaps the only animals that are hunted for their teeth.
D．An elephant uses its long, pointed tusks as tools for digging in the ground for food.
Some years ago safety rules ______.
A．were put forward due to scientists' recommendations
B．came into being as a result of the workers' demand
C．were introduced because quite a number of people were killed or seriously injured
D．were effective enough to protect workers and customers
