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【单选题】
结核杆菌致病因素可能是:( )A.
内毒素
B.
外毒素
C.
侵袭性酶类
D.
抗吞噬
E.
因子、C-分枝菌酸苷酯、硫酸脑苷酯、分枝杆菌生长素
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举一反三
【单选题】There is _____ 'h' and _____ 'u' in the word 'hour'. [ ]
A.
a; a
B.
an; a
C.
an; an
D.
a; an
【单选题】There is ____________ ' h ' and ____________ ' u ' in the word ' hour '. [ ]
A.
a, a
B.
an, an
C.
a, an
D.
an, a
【单选题】There is ________”h” and ________”u” in the word “hour”.
A.
an ; a
B.
a ;an
C.
a ; a
D.
an; an
【简答题】Combien ça coûte? (1万5千欧)
【单选题】There is _____'u' and _____'r' in the word 'hour' [ ]
A.
an, a
B.
a, an
C.
a, a
D.
an, an
【单选题】There is ________'u' and ________'h' in the word 'hour'.
A.
a/a
B.
an/an
C.
a/an
D.
an/a
【单选题】听力原文： The terrible destruction of the World Trade Center, on September 11th 2001, has united the States in a way that they have not known for many years. It has also united most of the world. We will ...
A.
2
B.
3
C.
4
D.
5
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