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【单选题】
Receivers can beA.
a group;
B.
a single person;
C.
an institution;
D.
all of the above
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【单选题】听力原文： Americans recognize that there is a past on which the present rests. But they have not developed their sense of the depth of time to the extent that this has been done in the Middle East and Sou...
A.
Twenty thousand years.
B.
Two to six thousand years.
C.
A thousand years.
D.
Hundreds of years.
【简答题】堆栈数据的进出原则是 。
【单选题】The literature works is said ______ into many foreign languages ______ in the past few years.
A.
to have translated; in length
B.
to have been translated; at length
C.
to be translated; at length
D.
to being translated; for length
【单选题】Throughout the past few centuries there ______ recorded reports of space vehicles which have visited our earth from another planet.
A.
have been
B.
are
C.
had been
D.
were
【简答题】请用化学式表示下列物质： （1）家庭生活中常用的一种调味品的主要成分是______； （2）常温下，铝表面生成的致密的保护膜是______； （3）人体“第一能源”中提供能量的最基本的物质是______．
【单选题】The lake by the village is believed ______ a number of victims in the past 3 years.
A.
to claim
B.
to have claimed
C.
claiming
D.
being claiming
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