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】Despitetheproliferationofotherfastermodesoftransportation,therailroadsremainthelargestcarriersofintercityfreightintheUnitedStates.
选项：
A.schemes
B.means
C.tracks
D.variables
答案：
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】In 1974 Henry Aaron broke Babe Ruth's monumental lifetime record of 714 home runs.
选项：
A.archaic(old,antique)
B.degrading(discredit)
C.outstanding
D.entire
答案：
C
解析：
暂无解析
1、【题目】Some animals pant and sweat to speed evaporation of body moisture and thus cool themselves.
选项：
A.wiggle摆动slowly
B.breathequickly
C.rest
D.perspire
答案：
D
解析：
暂无解析
1、【题目】Batsfly,ratherthanglide,andthusaretheonlymammalscapableoftrueflight.
选项：
A.straight
B.safe
C.real
D.rapid
答案：
解析：
1、【题目】When carbon is added to iron in the proper proportions , the result is steel.
选项：
A.container
B.sequence
C.laboratories
D.amounts
答案：
D
解析：
暂无解析
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