正确答案: D

ideas

题目：________________

解析：D

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举一反三的答案和解析：

[单选题]12． About_______ of the workers in the factory were born in the __________．

two- thirds ; 1970s

解析：12．B【解析】句意：工厂里大约2/3的工人出生在20世纪70年代。分数的表达为分子用基数词，分母用序数词，如果分子大于1，则分母要用复数，排除C、D，年代的表达要在年份后加s．故选B。

[单选题]5． The number of the students in our class_______45．

is

解析：5.B【解析】the number of…意为“……的数目、数量”，后接复数名词，但谓语要用单数形式。

[单选题]AThis is the twins' bedroom． It is a nice room． The two beds look the same．This bed is Lily's and that one is Lucy's． The-twins have two chairs and one desk． Their clock， books and pencil cases are on the desk． Their backpacks are behind the chairs Some nice flowers(花) are on the desk． Some pictures are on the wall． Is there a base-ball? Yes， it，s under Lily's bed． The bedroom is very nice．

in the same room