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- 1what do you think ____ptotect our own environment
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- 4在三角形ABC中,角B=2角C, AD垂直于BC与D,若延长CB到E,使BE=AB,连结AE,求证：CD=AB+BD
- 5My.friend's ＿ Dale.
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- 7playing these games may take too much time .However,those ____ computers will probably enjoy them
- 8别饿坏了那匹马 文中残疾青年和“我”的特点是什么?要300字
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