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【判断题】
机会成本是实际发生的成本，对决策非常重要。()A.
正确
B.
错误
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举一反三
【单选题】— Look at that pretty girl! Do you know _______? — She is a dancer.
A.
who she is
B.
who is she
C.
what she is
D.
what is she
【简答题】完形填空。 In a class I teach s.I gave the task to 'Go to someone you love,and tell them that you love them.'At the beginning of the next __ 1 __,one of the students began by saying,'I was __ 2 __ wit...
【单选题】下列关于建筑工程常用的特性水泥的特性及应用的表述中，不正确的是( ) 。
A.
白水泥和彩色水泥主要用于建筑物内外的装饰
B.
膨胀水泥主要用于收缩补偿混凝土工程， 防渗混土， 防渗砂浆， 结构的加固， 构件接缝、接头的灌浆，固定设备的基座及地脚螺栓等
C.
快硬水泥易受潮变质，故储运时须特别注意防潮，并应及时使用，不宜久存，出厂超过3个月，应重新检验，合格后方可使用
D.
快硬硅酸盐水泥可用于紧急抢修工程、低温施工工等，可配制成早强、高等级混凝土
【简答题】下列关于建筑工程常用的特性水泥的特性及应用的表述中,不正确的是 ?
【单选题】Is it to hold the 2010 World Exhibition _______ makes Shanghai the focus of the world?
A.
when
B.
that
C.
which
D.
what
【单选题】______ she gave the postcards to?
A.
Whom it was that
B.
Who it was that
C.
Who was it that
D.
It was who that
【单选题】She realized that it was not the words but the way she spoke to Bruce ________ hurt him.
A.
who
B.
whom
C.
which
D.
that
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