题目内容
11．Boys and girls，please turn to Page and look at the picture in Unit 4．（ ）| A． | Twentieth，four | B． | Twenty，fourth | ||
| C． | Twentieth，fourth | D． | Twenty，four |
分析 孩子们，请翻到第二十页，看第4单元的第四张图片．
解答 答案：B．考查序数词．句意"孩子们，请翻到第二十页，看第4单元的第四张图片．"．第一个空，page+基数词，表示"第几页"，因此A，C不正确．第二个空，"第四幅图"用序数词fourth，前面加定冠词the．D不正确．答案是B．
点评 考查序数词．序数词是指表示顺序的数词，通常表示"第几"．要结合语境，选择合适用法，还要注意序数词的变换规律．
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| A． | for | B． | by | C． | since | D． | of |
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| A． | laughing and thinking | B． | laugh and think | ||
| C． | to laugh and think | D． | to laugh and to think |
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| A． | I don't think so | B． | I'm afraid so | ||
| C． | I hope so |
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