---Why does the lake smell terrible? ---Because large quantities of water ____.A.have pollutedB.is being pollutedC.has been pollutedD.have been polluted

[单选题]--Why does the Lake smell terrible?--Because large quantities of water .A． have polluted B. is being polluted C. has been polluted D. have been polluted

[主观题].________quantitiesofwaterarebeingusednowadayswiththerapiddevelopmentofindustryandagriculture.A．)ExcessiveB)ExtensiveC)ExtremeD)exclusive

[单选题]The electric fan has blown away the terrible smell in the hall, ______?A.ca

[单选题]The water of theGreat Salt Lake is _____seawater.A.saltier than that ofB.as

Inequality is dangerous, he argued, not merely because it doesnt look good to ha

[单选题]What happens in the end to the water from Lake Ontario?A.It is used by the

[单选题]B．ecause the circulating water is in a closed loop,_______is installed to cater for expansion and contraction of the water at different conditions of operation.A．an expansion jointB．a drain tankC．a head tankD．a contraction tank

If you buy our products()large quantities, you will get better prices.A. ofB. in

For the 31)of learning, it needs large quantities of data,and the easiest way to

[单选题]Why did you have to stop repairing the pump？Because the lamp gave ( ) light