形容合作的标题

If a+b=0,then the equation ax+b=0 for x has( )(A)only one root(B)only one root or no root(C)only one root or infinite roots(D)no root or infinite rootsinfinite roots:无穷多个根 if a方+b方>0,then the equation ax+b=0 for x has ()A、only one root（根） B、no root C、infinite roots（无数根） D、only one root or no root tree,digging,the,new,we,hole,were,a,for 连词成句 词语：身（ ）志（ ）在五年级上册的寒假生活中,有“身（ ）志（ ）”这一题.请问是什么词语? why were you shouting?Alice asked me to speak more -----.The line was bad A.noisily B.quietly C.loudly 为什么 词语补充身什么志什么 i was about go to sleep my mother telephoned me. I was about to go to sleep () my mother telephoned me decide和on有关的词组和例句 怎么记忆decide on词组用on不用in? decide on sth 想问这个短语中on 去掉是否可以?如果可以又有何区别?谢谢. 英语翻译什么用法 people in the box He can ()the large box easily填一个单词,五个字母,第二个是a Have your blessing me very satisfied是什么意思?如题.那位英语高手看看! 什么叫“二楼定律”? 在贴吧经常看到网友说“二楼定律”,是什么意思啊? 什么是二楼定律? 二楼定律哈哈 什么是摩天大楼定律 英语翻译 How do you s_______book? "How du you like the book?""It's quite different from ___ I read last monthA that B which C the one Dthe one what I have been very apricot Portuguese是什么意思 how do you read a book? 英语翻译上面说的够详细的了 remember get some bananas.和remember buy some bananas.哪一个是对的,为什么翻译出来都一个意思 he become a dentist in 2000改写句子he become a dentist in 2000（保持原句意思）he has ____ ____ a dentist ___ about five years.还有1题 J.K is one of my favourite writers .保持愿意J.K is _________ my favourite writers 改为双重否定句：这件事他肯定不知道. Math though she can't teach me.(虽然她不能教我数学） 这个句子对吗? my teach ask us a question in the class ,nobody can answer it .teach 是不...my teach ask us a question in the class ,nobody can answer it .teach 是不是应该改成teacher int x=1;if(x=2) printf（"you are a good boy"）; else printf("you are d bad boy");求打印结果,和理由