初级词汇
Though the two brothers majored in biology biochemistry and botany in Britain，they are interested in __1__(build) broad and brilliant bridges with bricks and stones，thinking to make a breakthrough in the field.They came back to China to make Beijing the __2__(basic) for their work.__3__(brief) speaking，I admire
them very much.
Exercise 1：将蓝色标记的词汇或者短语写出中文意思
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Exercise 2：将短文中的空格处补充完整
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