Question

一些简单的英语、数学题

A.英语
根据句意及首字母提示补全句子
Everyone wants to get a higer e_____
That is a d____ story.I don't like it.
句型转换
Mike didn't stay at home tow hours ago(改为同义句）
Mike wasn't ______ tow hours ago
The flowers are very beautiful.(改为感叹句）
______ ______ ______ they are!
B.数学
已知△ABC中，AB=AC，F在AC上，在BA的延长线上取AE=AF。求证EF⊥BC（有6中解法）

Answer 1

earings, deceptive,in,What beautiful flowers.

AB=AC 故 角B=角C,，AE=AF,故 角E=角AFE,角BAC=2倍角E,2倍角B+角BAC=180度，则角B=二分之一角=90度即角B=角E=90度，即EF垂直于BC

Answer 2

earning
deceptive
at home
how beatiful flowers
数学真的没法写

Answer 3

earning
deceptive
!!!是two 打错了 答案是 in、
what beautiful flowers
建议数学用画图的方式，画图是解决几何题的必备技巧，你这道数学题在不同条件下有不同的答案，我帮你写了你不画图也看不懂