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【多选题】
金属材料的机械性能包括（）。A.
强度
B.
塑性
C.
切削性
D.
硬度
E.
冲击韧性
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【单选题】Even if they are on sale， these refrigerators are equal in price to， if not more expensive than， __________at the other store.
A.
anyone
B.
the others
C.
that
D.
the ones
【单选题】The performance of this reasonably priced digital camera is _____ in quality to that of more expensive ones.
A.
beneficial
B.
fundamental
C.
comparable
D.
competitive
【单选题】Health Care in the US Health care in the US is well-known but very expensive. Paying the doctor's bill after a major illness or accident can cost hundreds of thousands of dollars. In the US, a person'...
A.
Right
B.
Wrong
C.
Not mentioned
【简答题】In the future,cars won’t be ______,and it’ll be _____ to travel everywhere by plane. A,cheap, expensive B. expensive ,expensive C. cheap , cheap D. expensive,cheap
【单选题】Why did the French consortium gave up to build the canal?( )
A.
Because it was too expensive.
B.
Because many people died.
C.
Because the topography in Panama was difficult to build a canal.
D.
Because the American government decided to buld it by themselves.
【单选题】It is reported that this medicine is _______ against lung cancer.
A.
economic
B.
easy
C.
expensive
D.
effective
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