汽車在75分鐘內完成90公里的公路它的平均速率是多少公里每小時

有一种爱叫做放手 这首歌是谁唱的呢? 水险什么意思 保险公司的水险部主要业务是什么呢?除了国际货物运输保险外,还有什么其他的吗?举几个例子好吗? One day,a farmer goes to town with a basket of cabbages,a goat and a wolf.On his way to the town,a river stops him and there is only a small boat on the rever.The boat is so small that each time he can take just one thing with him.He thinks and think 不必藏于己 于是什么意思? 黑板的英文字母 “不必藏于己”的“藏'的意思 生存战争里创作模式里的有英文字母的黑板有什么用? 【紧急】英语阅读 【紧急】英语阅读 十万火急的英语阅读（50分）In the past ten years,America’s National Basketball Association（NBA）has grown increasingly dependent on the rest of the world to supply players.When Michael Jordan and Larry Bird won gold in Barcelona in 19 屋下藏金是什么意思 your first what has no legs ,but can walk all day and all night ? 连词成句1.window,he,the,often,out,of,in,looks,class2,ten,night,at,must,i,be,in,by,bed,o~clockMaria（ ）early（ ）school every day window,he,the,often,out,of,in,looks,classlhelp,housework,i,school,my,do,the,after,momwear,we,gym,have,sports,for,class,shoes,tothe,night,at,must,i,be,in,by,bed,o'clock连词成句,全要我赏5 入藏仪式什么意思 英语一般疑问句回答 急! 1.Do you like apples 2.Does she usually play football after school3.Are you writing now4.Are they drawing pictures now5.Is there good food in Xinjiang6.Are there any books on the desk 括号用正则表达式怎么表示 C#正则表达式中小括号有什么作用?比如^\d+(.\d{2})?$中的小括号有什么作用? 正则表达式有小括号和没有小括号的区别?[\w\W]*?和([\w\W]*?)有什么区别啊 蒙入江陵,释于禁之囚……羽府藏财宝.皆封闭以待权至.这段话的意思要完整 丹书帛羽藏鱼腹 丛祠幽火出狐喉 大泽揭竿反暴秦 缘何司马只列侯 these American teachers can say Chinese改错 whales aren't____,they are mammals(哺乳动物）A.fish B.fishes请说一下原因``谢勒哈 You can go back what you like if you remember it well gnough How are we today?we are leaving,aren't 怎么翻译? we are visiting a chicken farm today 怎么翻译 初三化学题,急,悬赏50分,so easy的图中小试管中盛有几毫升水,与大试管连通的U型细玻璃管内放有少量水(已染成红色).如沿小试管壁小心地慢慢注入3 mL浓硫酸,静置片刻后,U型细玻璃管中可观察 急,悬赏50分,so easy 的 为什么d不行, so easy 详解,急,悬赏1000分, 初三化学.easy三种无色溶液：石灰水、氢氧化钠溶液、稀硫酸,怎么鉴别?!