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11．Yeasts capable of leavening bread are widespread, and in the many centuries during which the ancient Egyptians made only unleavened bread, such yeasts
must frequently have been mixed into bread doughs accidentally. The Egyptians, however, did not discover leavened bread until about 3000 B.C. That discovery roughly coincided with the introduction of a wheat variety that was preferable to previous varieties becau its edible kernel could be removed from the husk
without first toasting the grain.
Which of the following, if true, provides the strongest evidence that the two
developments were causally related?
A.Even after the ancient Egyptians discovered leavened bread and the techniques
for reliably producing it were well known, unleavened bread continued to be
widely consumed.
B.Only when the Egyptians stopped the practice of toasting grain were their
stone-lined grain-toasting pits available for baking bread.
C.Heating a wheat kernel destroys its gluten, a protein that must be prent in
order for yeast to leaven bread dough.
D.The new variety of wheat, which had a more delicate flavor becau it was not
toasted, was rerved for the consumption of high officials when it first began
to be grown.
E.Becau the husk of the new variety of wheat was more easily removed, flour
made from it required less effort to produce.
12．Many residents of Calovia are committed to using products containing recycled materials. Soon the consumers will get help in identifying such products from
a book being published by the Calovian government. The book offers a
comprehensive listing, by product type and brand, of goods sold in Calovia that contain recycled material. Therefore, publication of the book will almost
certainly increa the u of products containing recycled materials in Calovia.
Which of the following, if true, most strengthens the argument?
A.Proceeds from the sale of the book are not expected to exceed the cost of its
publication.
B.For numerous types of products, there are many brands that u recycled
materials, although their manufacturers and distributors do nothing to
adverti tho brands' recycled content.
C.For many materials, such as plastics, the recycling process results in a lower
quelgrade of material with a correspondingly different range of us.
D.For many types of products listed in the book, all the brands available in
Calovia u recycled materials.
E.Many manufacturers of products that contain recycled materials vary the
proportion of recycled materials in tho products in respon to changes in
price and availability.
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13．Political Advertiment:
Mayor Delmont's critics complain about the jobs that were lost in the city under Delmont's leadership. Yet the fact is that not only were more jobs created than were eliminated, but the average pay for the new jobs has been higher than the average pay for jobs citywide every year since Delmont took office. So there can be no question that throughout Delmont's tenure the average paycheck in this city has been getting steadily bigger.
Which of the following, if true, most strengthens the argument in thea great big world
advertiment?
A.The average pay for jobs created in the city during the past three years was
higher than the average pay for jobs created in the city earlier in Mayor
Delmont's tenure.麦田守望者txt
B.Average pay in the city was at a ten-year low when Mayor Delmont took
office.
C.Some of the jobs created in the city during Mayor Delmont's tenure have in
the meantime been eliminated again.
D.The average pay for jobs eliminated in the city during Mayor Delmont's tenure
has been roughly equal every year to the average pay for jobs citywide.
E.The average pay for jobs in the city is currently higher than it is for jobs in the
suburbs surrounding the city.
14．The traditional treatment of strep infections has been a ven-day cour of antibiotics, either penicillin or erythromycin. However, since many patients
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stop taking tho drugs within three days, reinfection is common in cas where tho drugs are prescribed. A new antibiotic requires only a three-day cour of treatment. Therefore, reinfection will probably be less common in cas where the new antibiotic is prescribed than in cas where either penicillin or
erythromycin is prescribed.
Which of the following, if true, most strengthens the argument?
A.Some of the people who are allergic to penicillin are likely to be allergic to the
new antibiotic.
B. A cour of treatment with the new antibiotic costs about the same as a cour
of treatment with either penicillin or erythromycin.
C.The new antibiotic has been shown to be effective in eradicating bacterial
infections other than strep.
D.Some physicians have already begun to prescribe the new antibiotic instead of
penicillin or erythromycin for the treatment of some strep infections.
E.Regardless of whether they take a traditional antibiotic or the new one, most
patients feel fully recovered after taking the drug for three days.
15．Male bowerbirds construct elaborately decorated nests, or bowers. Basing their judgment on the fact that different local populations of bowerbirds of the same species build bowers that exhibit different building and decorative styles,
rearchers have concluded that the bowerbirds' building styles are a culturally acquired, rather than a genetically transmitted, trait.
Which of the following, if true, would most strengthen the conclusion drawn by the rearchers?
A.There are more common characteristics than there are differences among the
bowerbuilding styles of the local bowerbird population that has been studied
most extensively.
B.Young male bowerbirds are inept at bowerbuilding and apparently spend years
watching their elders before becoming accomplished in the local bower style.
C.The bowers of one species of bowerbird lack the towers and ornamentation
characteristic of the bowers of most other species of bowerbird.
D.Bowerbirds are found only in New Guinea and Australia, where local
populations of the birds apparently ldom have contact with one another.
E.It is well known that the song dialects of some songbirds are learned rather
than transmitted genetically.
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16．Excavation of the ancient city of Kourion on the island of Cyprus revealed a pattern of debris and collapd buildings typical of towns devastated by
earthquakes. Archaeologists have hypothesized that the destruction was due to
a major earthquake known to have occurred near the island in A.D. 365.
Which of the following, if true, most strongly supports the archaeologists'
hypothesis?
A.Bronze ceremonial drinking vesls that are often found in graves dating from
napieryears preceding and following A.D. 365 were also found in veral graves
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near Kourion.
B.No coins minted after A.D. 365 were found in Kourion, but coins minted
before that year were found in abundance.
C.Most modern histories of Cyprus mention that an earthquake occurred near the
island in A.D. 365.
D.Several small statues carved in styles current in Cyprus in the century between
A.D. 300 and 400 were found in Kourion.
E.Stone inscriptions in a form of the Greek alphabet that was definitely ud in
Cyprus after A.D. 365 were found in Kourion.
17．The Calex Telecommunications Company is planning to introduce cellular telephone rvice into isolated coastal areas of Caladia, a move which will
require considerable investment. However, the only significant economic
activity in the areas is small-scale coffee farming, and none of the coffee
farmers make enough money to afford the monthly rvice fees that Calex would have to charge to make a profit. Nevertheless, Calex contends that making the rvice available to the farmers will be profitable.
Which of the following, if true, provides the strongest support for Calex's
contention?合肥少儿英语培训班
A.Currently, Caladian coffee farmers are forced to ll their coffee to local
buyers at whatever price tho buyers choo to pay becau the farmers are
unable to remain in contact with outside buyers who generally offer higher
prices.
B.In the coastal areas of Caladia where Calex propos to introduce cellular
telephone rvice, there is currently no fixed-line telephone rvice becau
fixed-line companies do not believe that they could recoup their investment.
port是什么意思C. A cellular telephone company can break even with a considerably smaller
number of subscribers than a fixed-line company can, even in areas such as the Caladian coast, where there is no difficult terrain to drive up the costs of
installing fixed lines.
D.Calex bas its monthly fees for cellular telephone rvice in a given region
partly on the cost of installing the necessary equipment to provide the rvice
there.
E.Calex has for years made a profit on cellular telephone rvice in Caladia's
capital city, which is not far from the coastal region.
答案：：11—15 CBDEB 16 B 17 A
