1、【题目】Bats fly, rather than glide, and thus are the only mammals capable of true flight.
选项：
A.straight
B.safe
C.real
D.rapid
答案：
C
解析：
暂无解析
1、【题目】Insectpestsareamongtheleadingcausesofcropfailure.
选项：
A.expected
B.chief
C.natural
D.least
答案：
解析：
1、【题目】Insect pests are among the leading causes of crop failure.
选项：
A.expected
B.chief
C.natural
D.least
答案：
B
解析：
暂无解析
1、【题目】Food must be moist in order to have a taste.
选项：
A.appetizing(delicious)
B.nutritious
C.damp
D.chewed
答案：
C
解析：
暂无解析
1、【题目】The future survival of the bald eagle is still an important American ecological concern.
选项：
A.migration
B.population
C.existence
D.evolution
答案：
C
解析：
暂无解析
1、【题目】Whencarbonisaddedtoironintheproperproportions,theresultissteel.
选项：
A.container
B.sequence
C.laboratories
D.amounts
答案：
解析：
1、【题目】The fear of smallpox, which terrorized the eighteenth century, has no analogy(likeness) today.
选项：
A.occurrence
B.remnants残留物
C.witnesses
D.parallel
答案：
D
解析：
暂无解析
1、【题目】Urban renewal programs strive to upgrade areas that are becoming slums.
选项：
A.reproach
B.improve
C.fortify
D.uproot
答案：
B
解析：
暂无解析
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