99年改错
The hunter-gatherer tribes that today live as our prehistoric 1.______
human ancestors consume primarily a vegetable diet supplementing 2._____ with animal foods. An analysis of 58 societies of modem hunter- gatherers, including the Kung of southern Africa, revealed that one
half emphasize gathering plant foods, one-third concentrate on fishing
and only one-sixth are primarily hunters. Overall, two-thirds
and more of the hunter-gatherer’s calories come from plants. Detailed 3.______ studies of the Kung by the food scientists at the University of
London, showed that gathering is a more productive source of food
than is hunting. An hour of hunting yields in average about 100 4.______ edible calories, as an hour of gathering produces 240. 5.______
Plant foods provide for 60 percent to 80 percent of the Kung 6._______
diet, and no one goes hungry when the hunt fails. Interestingly, if
they escape fatal infections or accidents, these contemporary
aborigines live to old ages despite of the absence of medical care. 7._______ They experience no obesity, no middle-aged spread, little dental
decay, no high blood pressure, on heart disease, and their blood
cholesterol levels are very low( about half of the average American 8._______ adult), if no one is suggesting what we return to an aboriginal life 9.________ style, we certainly could use their eating habits as a model for 10.________ healthier diet.
1999年
1. 答案：as →like
2. 答案：supplementing →supplemented
3. 答案：and →or
4. 答案：in →on
5. 答案：as →while / whereas
6. 答案：删去for，或改成about
7. 答案：删去第一个of
8. 答案：half ∧→that
9. 答案：if →While / Although / Though
10. 答案：for ∧→a
2000改错
The grammatical words which play so large a part in English
grammar are for the most part sharply and obviously different 1._______ from the lexical words. A rough and ready difference which may
seem the most obvious is that grammatical words have“ less
meaning”, but in fact some grammarians have called them 2._______ “empty” words as opposed in the “full” words of vocabul ary. 3.________ But this is a rather misled way of expressing the distinction. 4._________ Although a word like the is not the name of something as man is,
it is very far away from being meaningless; there is a sharp 5._________ difference in m eaning between “man is vile and” “the man is
vile”, yet the is the single vehicle of this difference in meaning. 6.________ Moreover, grammatical words differ considerably among
themselves as the amount of meaning they have, even in the 7.________
lexical sense. Another name for the grammatical words has been
“little words”. But size is by no mean a good criterion for 8._________ distinguishing the grammatical words of English, when we
consider that we have lexical words as go, man, say, car. Apart 9.________
from this, however, there is a good deal of truth in what some
people say: we certainly do create a great number of obscurity 10.________ when we omit them. This is illustrated not only in the poetry of
Robert Browning but in the prose of telegrams and newspaper headlines.
2000年
1. 答案：删去the
2. 答案：but →and/thus
3. 答案：in →to
4. 答案：misled →misleading
5. 答案：删去away
6. 答案：single →only
7. 答案：as →in
8. 答案：mean →means
9. 答案：∧lexical →such 或在words后加such，或把改成like
10. 答案：number →deal / amount
2001改错
During the early years of this century, wheat was seen as the
very lifeblood of Western Canada. People on city streets watched
the yields and the price of wheat in almost as much feeling as if 1._______
they were growers. The marketing of wheat became an increasing 2._______ favorite topic of conversation.
War set the stage for the most dramatic events in marketing
the western crop. For years, farmers mistrusted speculative grain
selling as carried on through the Winnipeg Grain Exchange.
Wheat prices were generally low in the autumn, so farmers could 3._______
not wait for markets to improve. It had happened too often that
they sold their wheat soon shortly after harvest when farm debts 4.________ were coming due, just to see prices rising and speculators getting rich. 5._______ On various occasions, producer groups, asked firmer control, 6._______
but the government had no wish to become involving, at 7.______
least not until wartime when wheat prices threatened to run
wild.
Anxious to check inflation and rising life costs, the federal 8.______ government appointed a board of grain supervisors to deal with
