天鹅可以飞多高

character和characteristic有什么区别The ideal person for this job has these ______:ten years experience and an advances degree.A,characters B,characteristics为什么要选择B 从发绿色荧光的海蜇体内获得一段DNA片段,并将其插入到小鼠的基因组中,可得到发绿色荧光的小鼠,由此可请分析各个选项, she works in a school .butshe __ ateacher .she is a nurse填空 荧光蛋白基因在基因工程中是否可以用做目的基因?绿色荧光蛋白简称GFP,是由238个氨基酸组成的单链,最初是从发光水母中分离出来的结构蛋白通过对绿色荧光蛋白的化学改造,目前还发展出了 感激的造句 __ that woman in red?She is my mother 选词并用适当的形式填空such as come out make as a result look after spend1.When I went for a trip,he _________ my dog.2.She _________ two hours reading yesterday.3.Many pupils have hobbies ____________ reading,painting.4.Reading books can _ 用于植物系统学研究的基因或基因序列有哪些? 怎样获取一个植物的未知DNA序列?知道的朋友来交流一下.用真核生物的antipoter可以吗? 可以改变植物基因的是什么? 已知两个关于x的方程：①mx²-2(m+2)x+m+5=0 ②(m-5)x²-2(m+2)x+m=0.求使方程①没有实数根,方程②有两个异号实数根时m的取值范围. hylhjh2008@y 穷酸秀才有两盒玻璃球共100个,先从第一盒里取出1/4放入第二盒,再从第二盒里取出它现有的5/hylhjh2008@y穷酸秀才有两盒玻璃球共100个,先从第一盒里取出1/4放入第二盒,再从第二盒里取 选词并用其适当形式填空(enjoy,live,quiet,tired,small,dinner,behind,interesting,not,walk,no,take)Do you know Sun Garden?Sun Garden in good place () in.It's a very () district.It's () on the busy street.If you are () after work,you can () the [入户调查]英文咋说入户调查了解当地商业街的发展情况,人文地理调查. 单线入户用英语怎么说?RT 如何用地道英文说单线入户?是指网络方面的.请问您是怎么确定是single door的？所有的解释都是单扇门啊。给个资料地址吧。 “完成落户手续”英文怎么说啊 若(x+2)(x-2)=x²-mx-n,则m= n= 选词,并用其正确形式填空.teach draw watch like go 1、he()play the violin. 2、my pen pal()tv at nig3、tom()towork by bus4、mr li () us computer5、i like()pictures我在线等着呢,帮帮忙!还有方法,方法是什么,求! 根据选词并用其恰当形式填空also child eat potato ltaly1.-What's in the basket?-There are many _______ in it.2.I like food _________ very much.3.All the _______ like ice cream.4.He would like _______ some dessert.5.He grows flowers in 已知函数f(x)=x^2+mx,若关于x的不等式f(x)>_1的解集是R,则m的取值范围是 已知p:不等式mx^2+1>0的解集是R;q:f(x)=logm^x是减函数.若p或q为真,p且q为假,求m取值范围 My father got lost ;to make things worse ,it was raining.为什么用动词不定式（to make） 英语（根据情景,填写恰当的句子不全对话）A:What are you doing,Tom?B:I'm looking for my new pen.A:(1)_____________________?B:I bought it yesterday.A;(2)___________________?B:It is red.I like it very much.A:Let me help you.Is it in you f(2x+1）=3x-5,求f(x)=? 已知sinα-√3cosα=(2m-3)/(2-m),求m的取值范围 Before you sak the librarian for help,you should make every effort to find the materials yourself.bang wo ba juzi fanyi yi xia 已知g(θ)=sin^2θ+mcosθ-2m,θ为锐角,求满足g(θ)＜-1的m的取值范围.第一个是sinθ的平方, my parents has saved their entired life啥意思 Spending all my nights.all my money going out of the townDoing anything just to get you off of my mindBut when the morning comes and I"m back where I started againTrying to forget you is just a waste of timeChorus:Stansfield LisaBaby come backAny kin 3x(2x＋y)－2x(x-y),其中x＝1,y=1/5 Her parents give hei some ( )(luck) money every Spring Festival. You forgot me