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【单选题】
仅含有机污染物的废水经( )后, BOD 5 可降至 20~30mg/L ,水质一般可达到排放标准。A.
一级处理
B.
二级处理
C.
三级处理
D.
过滤并调节 pH
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皮皮学刷刷变学霸
举一反三
【单选题】The idea of an hour without TV is NOT radical because
A.
TV is very popular among people for only twenty-five years.
B.
TV is an electronic baby-sitter.
C.
we might get better shows.
D.
radio involves the listener' s imagination.
【单选题】Companies often sponsor popular shows on TV.
A.
Business people watch popular TV shows.
B.
Businesses pay money for popular TV shows.
【单选题】The Internet has become increasingly popular, ______ us to see as well as to hear all kinds of programmes.
A.
to allow
B.
allowing
C.
allowed
D.
having allowed
【单选题】Many of my classmates think Wang Han is ______ host in Hunan TV Station.
A.
popular
B.
more popular
C.
the most popular
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