复合函数求单调区间

地球生物大灭绝的原因越全面越好啊 地球上有那几次生物大灭绝?我只知道有6次,可哪6次我就不知道了 为什么不是There is a (h) and an (u) in the word (hour).而是There's an (h) and a (u) in the word (hour).Thank you~ There is ( ) "r " in the word "hour"括号里要添“an”还是“a”?能说明原因吗 there is ——“h” in the word "hour" A a B an C the D / There is _____"u"and______"h" in the word "hour"为什么？a和an的各有哪些 There is ___ "h",____ "O",_____ "u"_____ and_____ "r" in ____ word "hour".A.a an a an the B.an an an an a C.an an a an the D.a an an an a 写可爱的词语形容可爱的词语 The pen is blue对划线部分提问（划线部分为is blue） The bag is blue.（对划线部分进行提问） 补充：The girl stood there _______(像块石头似的) there at the door stood a girl about the same height ____.A.as me B.as mine为什么啊 不是the girl is as tall as me吗 怎样判断? There stood a girl at the corner ```as There stood a girl at the corner of the street,looking around,as if _____whether she was at the right placeA、found out B、to find out C、finding out D、find out There stood a girl about the same height There stood a girl about the same height 【高一英语选择】There at the door stood a girl about the same height____.A as meB as mine C with mine D with me 用什么词形容女孩子淘气? she likes (blue )best.对化线部分提问 There is ( ) "s" in the word "bus".括号里填啥,为什么 My borther likes the blue car划线提问（the blue ）划线 There is ___"s"and ___"u" in ___word "bus"A a,an,a Ban,a,the C an,an,a D a,a,the My borther likes the blue car划线提问（the blue car）划线My borther likes the blue car划线提问（the blue ）划线 刚刚发错啦！ There is _ "h" in the word "English".A/ B.a C.an D.the There is ____"u" and ____ "s" in the word "bus''这一类题目怎么分辨用a还是an呢? 女孩最怕什么? he likes wear blue T-shirt.还是he likes wearing blue T-shirt? i like blue shirt对划线部分(blue shirt)提问 您好,请问He likes the blue shirt best(改为同一句)The blue shirt__ __ __jimmy is making a kite( with the help of his father)对括号内提问__ __ jimmy ___ a kite? ____ shirt ____ Tom like?回答是He likes the blue one.空怎么填?su du o 英语! The boy in a blue T-shirt is twelve(对划线部分提问)The boy in a blue T-shirt is twelve(对划线部分提问)划线的是twelve 形容儿童俏皮顽皮的词语 描写儿童天真活泼的诗句是唐朝的诗 勤奋 诗句