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】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】The Salk vaccine is a major factor in the fight to eradicate polio.
选项：
A.completelydestroy
B.carefullydisguise
C.sustain
D.contain
答案：
A
解析：
暂无解析
1、【题目】Although the Carbon 14 method of dating old objects is not foolproof , it is the best method available at present
选项：
A.whollyoperational
B.entirelyserviceable
C.fullyreliable
D.completelysafe
答案：
C
解析：
暂无解析
1、【题目】Thefirstpaperwasmadefromthebarkofthemulberrytree.
选项：
A.driedwood
B.outercovering
C.syrup(sirup)
D.root
答案：
解析：
1、【题目】AlthoughtheCarbon14methodofdatingoldobjectsisnotfoolproof,itisthebestmethodavailableatpresent
选项：
A.whollyoperational
B.entirelyserviceable
C.fullyreliable
D.completelysafe
答案：
解析：
1、【题目】Comets are still regarded with awe by some people.
选项：
A.wonder
B.concern
C.resentment
D.detachment
答案：
A
解析：
暂无解析
1、【题目】Thewheelsofthefirstroadvehicleswerefashionedfromcrudestonedisks.
选项：
A.hand-carved
B.roughlymade
C.flat
D.heavy
答案：
解析：
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