按要求写词语。

近义词：立即____   呈现____    增加____   拒绝____

反义词：清脆____   美丽____      自动____

如图，△ABC是等边三角形，BD平分∠ABC，延长BC到E，使得CE=CD．

求证：BD=DE．

对于电容C=，以下说法正确的是(           )

词形转换。用括号内所给单词的适当形式填空，每空格限填一词。

____(lucky) , I had an umbrella, but I still got wet.

阅读理解
B
    Hello!I'm Kate．I want to talk about my smart phone(智能手机)．My smart phone is white．It's from my uncle Sam．He works in New York and comes back to London every December．I like mv smart phone．It is useful.
    The school rules don't allow(允许)us to take smart phones to school,so I usually use it after school or on the weekend．When I go out with my friends，I like keeping it in my bag．So my family can call me at any time．When I don't go to school．I like to call my friends to talk to them，or ask them for help with my study．I'm not very good at math，so I put an APP(应用软件)about math in my smart phone to help me． It is fun and helpful．I also use the smart phone to do some reading，play games，and watch movies．Isn't it great?
    Sometimes smart phones are not good for people．Some people spend too much time on it．I like my smart phone and I know how to let it help me. It's my good friend．
根据材料内容选择最佳答案。