光的波粒二象性

一个池塘所有的鱼算是一个群落吗?不同的鱼算是不同的种群,不同的种群和在一起不是群落吗 If Bob's wife doesn't agree to go on a holiday in winter,__________.A.neither he will B.neither选什么?并说明原因 If Bob's wife doesn't agree to sign the papers,neither will he 为什么不能用 neither won't he? i had a toothache three days ago 对划线部分提问 had a toothache 格式 [ ] [ ] the [ ]with you? Just cool your heels!在什么情况下说Just cool your heels!好了,安静会儿吧这个是在争吵中?还是抱怨的之后说别人? JUST COOL This filthy society 、it where are from innocence age .意思是什么 she sleeps at nice hours every night 改错 She often watches TV for ____(many) than two hours a day I'm angry with Peter because he alway borrows my school thing ( ）permissionA withB withoutC fromD about He left the meeting early because he had to (_____) his son from school.A.pick upB.put upC.take upD.bring up这里的四个词组分别是什么意思啊? Peter______(not go)to school yesterday because he ______(be)ill.这里该填什么,为什么这么填? real i think your english is rather where are lions where are lions from?同意义句 是啥 The student studies hard,but sometimesThe student studies hard ,but sometimes he ___ trouble with English.A. is being B. will have C. has D. has had我感觉C和D都对 但答案是C 我个人理解是选C是因为sometimes与现在时连用,选 I think there will be fewer people()50()100years A between;and B from;to C in;to D about;and； In order to be an e( ) student,he studies hard every day.这是个填空题 知道的回答下... 白楼怎么样 Musicians Wantrd for Rock Band这个短文的翻译 Musicians Wantd for Rock Band的意思 He often helps the students who he thinks are not so good at English.中主语和宾语分别是什么? 19.He often helps the students _____ he thinks are not quick at their studies.A.whom B.who C.w这个题的答案是b但是我不知到为什么 Mrs.White often helps the students______he thinks are not quick at their studies.A.which B.who C.whom 为什么选B,C有什么问题Mrs.White和students谁是这句话的主语啊？顺便讲解一下这句话的意思 He often helps the students__he thinks are not quick enough at their studies.A.whom B.who C.when D.because 需要思路 阅江楼的壁画越多越好! 楼梯墙装什么样的壁画 This is the begnning of the ___ tour.七年级下册Unit2的the 后面是g____ 请注意不是这些 不对帮改一下.I'd also like to thank your,it was terrible when earthquake finish ,I remember thousand of families were killed and many children were left without parents,The number of people who were killed or injued reached more than 4000000,If 求大虾帮看下我这段英文写得对不对,Dear Fan,I just got a call from the immigration department that you have to renew your certificate of registration form after you get a new visa.So,could you bring your passport and work permit to me t 17层电梯房子建在坚硬的岩石上,有人说地基太重,此说法有依据吗?如果选在3楼,它的利与弊分别是哪些? I want to go around China.翻译