What can be inferred from the fourth paragraph?
A.Farm areas accept waste from the city in modem society.
B.There is cheap land to bury waste in modem society.
C.It is difficult to find space to bury waste in modem society.
D.Ways to deal with waste in modem society stay the same.
A.Watching TV is a waste of time.
B.The man needs relaxation from recreation.
C.Collecting socks is a waste of time.
D.The man has to collect socks.
He went from door to door, gathered waste papers and magazines.()
What can be inferred from the fourth paragraph?
A.Farm areas accept waste from the city in modern society.
B.There is cheap land to bury waste in modem society.
C.It is difficult to find space to bury waste in modem society.
D.Ways to deal with waste in modem society is similar to that of the past.
What can an exhaust system do if it is efficient?
A.It can prevent the waste gas from escaping.
B.It can let the waste gas and compound escape quickly out of it.
C.It can prevent the engine from producing waste gas.
D.It can store as much waste gas as possible.
The big lake was (contaminated) with waste waters from nearby factories.
A.widened
B.blackened
C.polluted
D.mixed
A.contained
B.terminated
C.intimidated
D.contaminated
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