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【单选题】
下列化合物中能与托伦试剂反应的是（ ）。A.
淀粉。
B.
蔗糖。
C.
纤维素。
D.
麦芽糖。
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【单选题】―When was the house built? ―It was built in 1949 _______ the PRC was founded．
A.
which
B.
that
C.
what
D.
when
【简答题】A．It was opened in the 20th century. B．It was built under the busy streets of London. C．A lot of workers worked for the Victoria Line. D．No one checks and collects the tickets on the platform.
【简答题】The Longest Bicycle The longest true bicycle was 28.1 meters long and had two wheels. It was built by the students at the Delft University of Technology in the Netherlands. The bicycle was ...
【判断题】In America the first metro was built in New York, and it was called subway because it was built mostly under the roads.
A.
正确
B.
错误
【单选题】It was built this century.
A.
at the beginning of
B.
in the beginning
C.
at the beginning
D.
under the beginning
【简答题】A. It was built by the Canadians. B. It was extremely difficult to clear. C. It was built to facilitate trade. D. It was begun a few years after Maine became a state.
【单选题】肋骨编号方法是( )1习惯上以舵杆中心线为“0”号,对全船肋骨进行编号2以尾垂线为“0”号对全船肋骨进号行编3以船中为“0”号对全船肋骨进行编号
A.
①②
B.
②③
C.
①③
D.
①②③
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