第1题
第2题
第3题
第4题
第5题
A.rose
B.is rising
C.have risen
D.has risen
第6题
A. 8.0.
B. 12.0.
C. 13.2.
第7题
A、at/from/until/at/to/in/in/about/to/to
B、in/between/for/at/to/in/in/at/to/to
C、at/until//above/for/to/until/in/by/to/to
D、in/between/for/above/to/in/in/by/by/to
第8题
A.The level of lead contamination in United States rivers fell sharply in both 1975 and 1983.
B.Most of the decline in industrial discharges of lead occurred before 1976, but the largest decline in the level of river contamination occurred between 1980 and 1985.
C.Levels of lead contamination in rivers fell sharply in 1975 - 1976 and rose very slightly over the next nine years.
D.Levels of lead contamination rose in those rivers where there was reduced river flow due to drought.
E.Although the use of leaded gasoline declined 75 percent between 1975 and 1985, 80 percent of the decline took place in 1985.
第9题
A.corporate profits were mostly gained by lower interest rates.
B.productivity rose at a 2.2% annual rate over this 10 year period.
C.consumer spending stayed so strong even in the recession.
D.many workers were qualified for the sorts of jobs in production.
第10题
A.corporate profits were mostly gained by lower interest rates.
B.productivity rose at a 2.20% annual rate over this 10-year period.
C.consumer spending stayed so strong even in the recession.
D.many workers were qualified for the sorts of jobs in production.
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