题目内容
1．The twins were born the morning of May 1st．（ ）| A． | inH： | B． | on | C． | at | D． | of |
分析 这对双胞胎出生在五月一日的上午．
解答 答案：B 在具体某一天的上午，下午用on，at用在具体几点钟前面，in用在月份和年代的前面．结合句意：这对双胞胎出生在五月一日的上午．是具体某一天的上午，应该用on．故选B．
点评 本题考查介词的辨析，介词的用法一般都是固定的．熟记介词的用法及结合语境是解答本题的关键．
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| 42．A．hungry | B．angry | C．thirsty |
| 43．A．receives | B．gave | C．accepted |
| 44．A．very | B．too | C．so |
| 45．A．Before | B．After | C．Since |
| 46．A．got to | B．got | C．reaches |
| 47．A．in | B．with | C．on |
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| 50．A．young | B．younger | C．the youngest． |
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