贴几个rate的题目,供大家讨论:
大全-68
68. After the Colonial period’s 50 percent mortality rate, life expectancy improved for children, but as late as the nineteenth century about one child in three died before reaching the age of six.
(A) After the Colonial period’s 50 percent mortality rate, life expectancy improved for children, but
(B) Even though children’s life expectancy, which improved over the Colonial period’s 50 percent mortality rate,
(C) Although life expectancy for children improved after the Colonial period, during which the mortality rate was 50 percent,
(D) While there was an improvement in life expectancy for children after the 50 percent mortality rate of the Colonial period, still(C)
(E) Despite children’s life expectancy improvement from the Colonial period’s 50 percent mortality rate,
大全-122
As a result of the continuing decline in the birth rate, less people will enter the labor force in the 1980’s than did in the 1960’s and 1970’s, a twenty year period during which people born after the war swelled the ranks of workers.
(A) less people will enter the labor force in the 1980’s than
(B) less people will be entering the labor force in the 1980’s as
(C) fewer people will enter the labor force in the 1980’s as
(D) fewer people will be entering the labor force in the 1980’s as(E)
(E) fewer people will enter the labor force in the 1980’s than
大全-140
As the housing affordability gap widens, middle-income families are especially hard-hit, and these families can no longer qualify to buy homes, and rising rental rates force them to use far more than the standard 25 percent of their incomes for housing, leaving them with no equity or tax write-offs to offset the expenditures.
(A) and these families can no longer qualify to buy homes, and
(B) since these families can no longer afford to buy homes, furthermore
(C) for these families can no longer afford to buy homes, yet
(D) and these families can no longer afford to buy homes; however,(C)
(E) and these families can no longer afford to buy homes, for
大全-146 Astronomers studying the newly discovered star say that it provides clues about our galaxy’s origin, that it may supply data about how fast our galaxy is expanding, and moreover it is perhaps the most distant star in the entire Milky Way.
(A) about how fast our galaxy is expanding, and moreover it is perhaps
(B) regarding the speed our galaxy expands at; moreover, they think it may be
(C) about how fast our galaxy expands and perhaps be
(D) on the galaxy’s expansion rate and perhaps(E)
(E) about how fast our galaxy is expanding, and that it is perhaps
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