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【单选题】
整形外科临床上做血管修复，请指出以下哪种说法是错误的( )A.
自体静脉移植代替动脉，只适用于四肢较小的动脉
B.
有用中国制造的真丝人造血管
C.
经处理的人类脐带静脉是中小动脉修复的良好材料
D.
人造血管中效果最好的是尼龙制造的
E.
同种异体血管经低温冷冻干燥，特别是1%～2%戊二醛处理后，基本上可以去除抗原性
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【单选题】听力原文： London in the 17th century was very attractive, like many European cities of the time. There was a beautiful cathedral, St. Paul's, and a magnificent Town Hall, the Guildhall. Also, there were m...
A.
Near Town Hall.
B.
In a narrow, dirty street.
C.
Behind many attractive churches.
D.
On the south side of the River Thames.
【判断题】Historically, education in the UK was voluntary and many of the schools that existed were set up by churches.
A.
正确
B.
错误
【单选题】There were not many ______ or ______.
A.
towns; churches
B.
town; church
C.
towns; church
D.
town; churches
【单选题】In our class, when the bell rang and the teacher closed his book, it was a ________ for everyone to stand up. [ ]
A.
signal
B.
chance
C.
mark
D.
measure
【简答题】In our class, when the bell rang and the teacher closed his book, it was a ______ for everyone to stand up. A．signal B．chance C．mark D．measure
【单选题】All the following are closed class words EXCEPT______.
A.
conjunctions
B.
prepositions
C.
adjectives
D.
pronouns
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