Sewage and water systems are the main problems of Columbus.A.YB.NC.NG
Sewage and water systems are the main problems of Columbus.
A.Y
B.N
C.NG
Sewage and water systems are the main problems of Columbus.
A.Y
B.N
C.NG
第1题
The water in this part of the river has been contaminated by sewage (污水)
A.polluted
B.downgraded
C.mixed
D.blackened
第2题
The water in this part of the river has been contaminated by sewage(污水).
A.polluted
B.downgraded
C.mixed
D.blackened
第3题
The water in this part of the river has been contaminated by sewage (污水).
A.polluted
B.downgraded
C.mixed
D.blackened
第4题
The water in this part of the river has been contaminated by sewage (污水).
A.polluted
B.downgraded
C.mixed
D.blackened
第5题
According to the passage, most water pollutants come from .
A. raw sewage
B. toxic chemicals
C. algae
D. household waste
第6题
The water in this part of the river has been contaminated by sewage (污水).()
A.polluted
B.downgraded
C.mixed
D.blackened
第7题
Which of the following is true? __________
A.The sewage pipes built by the Romans are no longer in use now.
B.Sewage pipes in Arabia were built by the Romans.
C.A sewage pipe still being used today in Rome was built 2,000 year ago.
D.The ancient.Romans got their drinking water from underground pipes.
第8题
The water in this part of the river has been contaminated by sewage (污水).
A.polluted
B.downgraded
C.mixed
D.blackened
第9题
The passage is mainly about______.
A.urban solid waste disposing program
B.rural waste disposing and water sewage treatment
C.rural environment pollution and damage
D.urban environment pollution and damage