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.______养胃的主食
studies of the Kung by the food scientists at the University of次开头成语
London, showed that gathering is a more productive source of food
than is hunting. An hour of hunting yields in average about 100 4._荨麻疹治疗药物_____
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, the contemporary
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aborigines live to old ages despite of the abnce of medical care. 7._______
They experience no obesity, no middle-aged spread, little dental
decay, no high blood pressure, on heart dia, 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 u their eating habits as a model for 10.________
healthier diet.
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
em the most obvious is that grammatical words have“ less
meaning”, but in fact some grammarians have called them 2._______
“empty” words as oppod in the “full” words of vocabulary. 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 meaning 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
themlves as the amount of meaning they have, even in the 7.________
lexical n. Another name for the grammatical words has been
“little words”. But size is by no mean a good criterion for 8._开包子店________
distinguishing the grammatical words of English, when we 小学古诗75首
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 pro of telegrams and newspaper headlines.
2001改错
During the early years of this century, wheat was en 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.__桃源人_____
they were growers. The marketing of wheat became an increasing 2._______
favorite topic of conversation.
War t the stage for the most dramatic events in marketing
the western crop. For years, farmers mistrusted speculative grain
lling 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.__当是时______
were coming due, just to e 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
deliveries from the crops of 1917 and 1918. Grain Exchange
trading was suspended, and farmers sold at prices fixed by the
