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【单选题】
肠杆菌科中,表面抗原是A.
O抗原
B.
H抗原
C.
K抗原
D.
以上都是
E.
以上都不是
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【单选题】Hydrogen is one of the most important elements in the universe ______ it provides the building blocks from which the other elements are produced.
A.
so that
B.
but that
C.
provided that
D.
in that
【单选题】It can be inferred from the passage that many Americans find it difficult to ______.
A.
build a house
B.
find a ready-made house
C.
have a good job
D.
buy a house
【单选题】There is a fully ________ health center on the ground floor of the main office building.
A.
installed
B.
equipped
C.
provided
D.
projected
【单选题】In Britain today, women _______ 44% of the workforce, and nearly half the mothers with children are in paid work.
A.
buildup
B.
makeup
C.
takeup
D.
sendup
【单选题】The major reason for Oxford University's lack of funding is that ______.
A.
the idea of building of a business school has been rejected by the teachers
B.
the government is reluctant to let it charge the students high tuition fees
C.
it has to pay sufficient salaries to attract top teachers
D.
the government can't afford the high research subsidies
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