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当前位置:首页>>热门考试>>托福>>《1997年10月托福考试阅读理解全真试题》(4) |
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《1997年10月托福考试阅读理解全真试题》(4) |
| 来源:www.stu88.com 时间:2006-04-27 |
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The bills of different crossbill species and subspecies vary -
some are stout and deep, others more slander and shallow. As
a rule, large-billed crossbills are better at securing seeds from
large cones, while small-billed crossbills are more deft at
removing the seeds from small, thin-scaled cones. Moreover,
the degree to which cones are naturally slightly open or tightly
closed helps determine which bill design is the best.
One anomaly is the subspecies of red crossbill known as
the Newfoundland crossbill. This bird has a large, robust bill,
yet most of Newfoundland s conifers have small cones, the
same kind of cones that the slender-billed white-wings rely on.
18.What does the passage mainly discuss?
(A) The importance of conifers in evergreen forests
(B) The efficiency of the bill of the crossbill
(C) The variety of food available in a forest
(D) The different techniques birds use to obtain food
19.Which of the following statements best represents the type of "evolutionary fine - turning" mentioned in line1?
(A) Different shapes of bills have evolved depending on the available food supply
(B) White - wing crossbills have evolved from red crossbills
(C) Newfoundland s conifers have evolved small cones
(D) Several subspecies of crossbills have evolved from two species
20.Why does the author mention oystercatchers, hummingbirds, and kiwis in lines 2-5?
(A) They are examples of birds that live in the forest
(B) Their beaks are similar to the beak of the crossbill
(C) They illustrate the relationship between bill design and food supply
(D) They are closely related to the crossbill
21.Crossbills are a type of
(A) shorebird
(B) hummingbird
(C) kiwi
(D) finch
22.Which of the following most closely resembles the bird described in lines 8-11?
(A) （图）
(B) （图）
(C) （图）
(D) （图）
23.The word "which" in line 16 refers to
(A) seed
(B) bird
(C) force
(D) bill
24.The word "gap" in line 18 is closest in meaning to
(A) opening
(B) flower
(C) mouth
(D) tree
25.The word "discards" in line 20 is closest in meaning to
(A) eats
(B) breaks
(C) finds out
(D) gets rid of
26.The word "others" in line 25 refers to
(A) bills
(B) species
(C) seeds
(D) cones
共8页:  [1] [2] [3] 4 [5] [6] [7] [8] 
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