1、【题目】ThecompanyissuesanannualreporteveryMarch.
选项：
A.ayearly
B.acomprehensive
C.afinancial
D.aproduct
答案：
解析：
1、【题目】ThefirstimportantexpositionintheUnitedStateswasheldinPhiladelphiain1876.
选项：
A.exhibition
B.concert
C.excursion
D.contest
答案：
解析：
1、【题目】Thefirstpaperwasmadefromthebarkofthemulberrytree.
选项：
A.driedwood
B.outercovering
C.syrup(sirup)
D.root
答案：
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】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
1、【题目】Whencarbonisaddedtoironintheproperproportions,theresultissteel.
选项：
A.container
B.sequence
C.laboratories
D.amounts
答案：
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】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】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】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