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【单选题】
下列说法不正确的是（ ）A.
除去乙烷中混有的少量乙烯的方法是通入溴水
B.
乙烯能使溴水因加成反应而褪色，乙烯能使高锰酸钾因氧化反应而褪色
C.
苯分子结构中的6个碳原子之间的键是介于单键和双键之间独特的键，不能使溴水、高锰酸钾因化学反应而褪色
D.
等物质的量的甲烷与氯气在光照条件下反应可以得到纯净物
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【单选题】听力原文： Washington The Federal Reserve cut interest rates by a modest quarter-percentage point on Tuesday, disappointing Wall Street hopes for bolder action but offering a bit more help to an economy fa...
A.
The Federal Reserve cut interest rates to 4.75 percent.
B.
The reduction of interest rate is offering help to the economy of the United States.
C.
The discount rate was reduced by a bold half point.
D.
The Federal Reserve lowered the discount rate to lubricate credit market.
【简答题】人的()总是深深打上了社会属性的烙印。
【单选题】A screen on the floor of the New York Stock Exchange shows the decision of the Federal Reserve The words below the picture is called _________ .
A.
cut
B.
cutline
C.
byline
D.
headline
【简答题】Text 4 On a five to three vote, the Supreme Court knocked out much of Arizona’s
immigration law Monday-a modest policy victory for the Obama Administration.
But on the more important matter of the Con...
【单选题】“A recent memorandum from the Presidents Council on Environmental Quality directs federal agencies to “develop and institutionalize policies to promote consideration of ecosystem services,” which they...
A.
historical
B.
social
C.
geographical
D.
political
【单选题】主要抑制多糖的水解,使葡萄糖的吸收减慢,使餐后血糖曲线较为平稳,从而降低餐后高血糖的药物是
A.
磺脲类药物
B.
双胍类药物
C.
α-糖苷酶抑制剂
D.
胰岛素增敏剂
E.
胰岛素
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