题西林壁是什么诗

生物 雌性苍蝇 蚊子和 蟑螂产的受精卵的雌雄比例? 我想了解一下 雌性苍蝇 蚊子和 蟑螂等昆虫产的受精卵的雌雄比例? 蟑螂为什么是雌雄同体 建党90周年短信为庆祝中国共产党成立90周年,单位举办“党在我心中”红色短信征集大赛,字数控制在90字以内,如果是复制的话最好加点自己的话 建党90周年 ——红色风采要写人的故事的 ! 高额悬赏红色短信,以建党90周年为主题,数量在最好30条左右,多的话可以我可以补充悬赏啊!我已经百度了不少短信,所以···一定要原创,用上什么 见与不见 体啊,凡客体啊神马的就再好不过了 讲师的简写是什么英语怎么简写，是lecturer？ 同学英文简写!同学的英语有简写吗? Father wen to his doctor for ____.A.an advice B.advice C.the advice D.advising请说明原因 Father asked his doctor for an advice about his heart trouble. 28.Father went to his doctor for _____ about his heart trouble.A.an advice B.advice C.advices D.the advices how many books are how many are eight and three?的意思 韩国经典歌曲铃声精选31 歌曲的名字是什么啊 代词,介词,疑问词有哪些和用处 真珠美人鱼里总共有几首歌 had better 后接＿＿,其否定形式为had better＿＿＿＿ had better的用法举个例子 在介词后在,名词、代词都可以做（ ） 什么是介词.代词.名词 （ ）是介词 后接名词或代词 小强是蟑螂么? 有什么比较好的方法灭蟑螂么? had better/would betterhad better和would better一样吗,它们的缩写都是you'd better吗?had not better=would not better吗?would better可以所写成“you'd better”吗？ The earlyer you get up,the more easy you'll catch the bus.是运用the+比较级,the+比较级吗?这个句子对吗? he is a (s___) boy,but his brother is a （s___).有一个空格可能是silly the boy isAllan.Behind ()(he)is his brother 仿句 爱心是一首飘荡在夜空的歌谣,是孤单无依的人获得心灵的慰藉以爱心为陈述对象,仿照上面的句式再造两个句子使之与例句一起构成排比 如图所示,一块长方形绿地毯地长200米,宽100米,要在绿地上开辟两条道路,每条道路的宽处处相等,求剩余绿地的面积. There are certain ________ when you must interrupt people who are in the middel of doing somethinga conditions b situations c occasions 求权威老师 帮我分析分析 1.There are certain ____ when you must interrupt people who are in the middle of doing sth. 丁零零怎么读?字典中零的读音是二声,但是在“丁零零”中,“零”是轻声吗?请指教!