What caused the d____of the Pony Express? (--the end or failure of an institution, an idea, a company, etc.)
What was the damage caused to the factory?
The stock of ______ was ruined.
What's the "another kind of disaster" (Line , Para. 3)?
A.The disaster caused by some creeping plate.
B.The disaster caused by the wrath of the gods.
C.The disaster caused by the over population.
D.The disaster caused by our willing blindness.
The investigation group tried in ______to discover what caused the failure of the engine.
A.diligence
B.vain
C.vigor
D.zeal
What kind of disease is not caused by the use of mobile phone?
A.Fatigue.
B.Headache.
C.Alzheimer's disease.
D.Tuberculosis.
Your _______ effort is absolutely needed to find out what caused this accident.
A.cooperatively
B.cooperation
C.cooperative
D.cooperate
What can NOT be caused by a decrease or an increase in ozone?
A.Skin cancer.
B.Harm crops.
C.Harm animals and fish.
D.Increase in temperature.
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