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【单选题】
One or two man-made satellites ___ in our country every year.A.
have been sent up
B.
will be sent up
C.
is sent up
D.
are sent up
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【简答题】什么是“高温超导体”?
【简答题】某纳税人月销售额130000元,若规定免征额为100000元,适用3%的税率,其应纳税额为多少?若100000元为起征点,税率不变,其应纳税额又是多少?
【单选题】It was not until the subprime loan crisis (次贷危机)______ great damage to the American financial system that Americans______the severity of the situation.
A.
caused realized
B.
had caused realized
C.
caused had realized
D.
was causing had realized
【单选题】高温超导体通常是指临界温度在液氮温度（77K）以上超导的材料。高温超导体研究的重大突破，曾掀起了以研究金属氧化物陶瓷材料为对象，以寻找高临界温度超导体为目标的“超导热”。这类超导材料的组成是（）
A.
稀土氧化物
B.
汞氧化物
C.
铜氧化物
D.
钇钡铜氧
【简答题】subprime mortgage cr
【单选题】The collapse of the subprime mortgage market
A.
did not affect the corporate bond market.
B.
increased the perceived riskiness of Treasury securities.
C.
reduced the Baa-Aaa spread.
D.
increased the Baa-Aaa spread.
【简答题】subprime market
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