6. Many are uninhabitable, by virtue of their small size and particular characteristics, but even the most favored are very isolated fragments of land, strictly circumscribed by the ocean, strictly limited in terms of the numbers of people they can support.
The phrase "by virtue of" is closest in meaning to which of following?
(A) regarding
(B) because of
(C) taking advantage of
(D) in place of
The word "circumscribed" is closest in meaning to which of following?
(A) located
(B) flooded
(C) restricted
(D) pushed
7. Simply surviving those ocean crossings of indeterminate length, in open canoes, to arrive on the shores of uninhabited and hitherto unknown islands, was a formidable achievement.
The word "indeterminate" is closest in meaning to which of following?
(A) undecided
(B) uncertain
(C) unacceptable
(D) increasing
8. The Rosetta stone thwarted scholars' efforts for several decades until the early nineteenth century when several key hieroglyphic phrases were decoded using the Greek inscriptions.
The word "thwarted" is closest in meaning to which of following?
(A) continued
(B) influenced
(C) encouraged
(D) frustrated
9. Lichens, probably the hardiest of all plants, live where virtually nothing else can---not just on rugged mountain peaks but also on sunbaked desert rocks.
The word "hardest" is closest in meaning to which of following?
(A) most unusual
(B) most basic
(C) most abundant
(D) most vigorous
10. Unlike other members of the plant kingdom, lichens are actually a partnership between two plants. The framework of a lichen is usually a network of minute hairlike fungus that anchors the plant.
The word "framework" is closest in meaning to which of following?
(A) structure
(C) condition
(D) environment
参考答案：
1 B
2 A
3 D
4 A
5 D
6 C C
7 B
8 D
9 D
10 A
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