1、【题目】The megaphone(microphone) makes the voice sound louder because it points sound waves in one direction and keeps them from spreading out in all directions.
选项：
A.slithering
B.radiating
C.interfering
D.murmuring
答案：
B
解析：
暂无解析
1、【题目】TheNativeAmericaninterpreterSacajaweawasavaluablememberoftheLewisanddarkexpeditionin1805.
选项：
A.veryfriendly
B.veryuseful
C.verythoughtful.
D.verywealthy
答案：
解析：
1、【题目】Whencarbonisaddedtoironintheproperproportions,theresultissteel.
选项：
A.container
B.sequence
C.laboratories
D.amounts
答案：
解析：
1、【题目】Creamoftartar酒石,aweakacid,canbeaddedtoeggwhitestohelpthemfoam泡沫whentheyarebeaten
选项：
A.whipped
B.aged
C.boiled
D.cracked
答案：
解析：
1、【题目】Blue－green algae grow abundantly in salt marshes.
选项：
A.primarily
B.slowly
C.onplants(cultivate)
D.ingreatnumbers
答案：
D
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】A mythical(imaginary) creature, the dragon was believed to have lion's claws, scaly skin, and fiery breath.
选项：
A.legendary
B.magical
C.frightening
D.perplexing
答案：
A
解析：
暂无解析
1、【题目】Oneofthegreatestbreakthroughsforprofessionalwomencamein1973whenthefieldofbankingopenedupforthem.
选项：
A.mostseriousdisappointments
B.mostsignificantadvances
C.mostabruptdeclines
D.mostcrucialsituations
答案：
解析：
1、【题目】Alligators still exist in some of the dank 潮湿 swamps and bayous小海湾 of Alabama's coastal regions.
选项：
A.weirdly古怪的fascinating
B.mythical
C.drab(monotonous)
D.unpleasantlyhumid
答案：
D
解析：
暂无解析
1、【题目】The Native American interpreter Sacajawea was a valuable member of the Lewis and dark expedition in 1805.
选项：
A.veryfriendly
B.veryuseful
C.verythoughtful.
D.verywealthy
答案：
B
解析：
暂无解析
1、【题目】In 1861 it seemed inevitable that the Southern states would break away from the Union.
选项：
A.strange
B.certain
C.inconsistent
D.proper
答案：
B
解析：
暂无解析
1、【题目】By the nineteenth century, embroidery on men's clothing had virtually disappeared except for the occasional decorative vest and tie.
选项：
A.almost
B.definitely
C.already
D.universally
答案：
A
解析：
暂无解析
1、【题目】 Communication is one of the most important bonds that hold cultural systems together.
选项：
A.obligations
B.qualities
C.links
D.needs
答案：
C
解析：
暂无解析
1、【题目】The company issues an annual report every March.
选项：
A.ayearly
B.acomprehensive
C.afinancial
D.aproduct
答案：
A
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
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