投资组合预期收益率及方差

my mother is a nures (一般 肯 否） ----（）（）（）（）? ------His mother is singer. it has got缩写形式 has got的缩写 2009-2010学年度市级重点高中协作校期中测试高二物理答案 it has not缩写!高分 大兴区2009-2010（还有08-09的）学年度第二学期期末检测试卷 MP3 is popular with music lovers because they can take it _____ they go.A.the place whichB.whereverC.to anywhereD.to everywhere选哪个?为什么? 将下列句子改为间接引语 1."Was an old man murdered this morning?"l wonder.l wonder_______2."How many crimes have you solved "the interviewer asked Detective Lu.The interviewer asked Dective Lu_________3.“Don't listen to music while you ar 非谓语动词是怎样用? 英语主动句变被动句the government will announce an increase in interest rates later today people play football all over the world a car hit Mr Smith as he was crossing the road they are going to buid1000 new houses in the village the weather 英文主动句变被动句(2)!1.my uncle bought this car2.he has written three novels3.they will sing these songs tomorrow4.they are painting the house5.i have given him three books6.he had told me that stoey before we there 非谓语动词,Few of us get the _____seven to nine hours of sleep a night,and many who have time to nap don’t,for fear of _______ night time sleep.A.recommended; spoiled B.recommended; spoilingC.recommending; spoiled D.recommending; spoiling If I can have you,is I this life the most happy thing i want to ask what the usage this thing havebeacase my computer is slow .and i delet my shurufa by accident... We don't have any money with us .This is the ( ) thing 英语 把以下主动句变被动句1.He understands my meaning.2.the policeman removed his hat.3.the living problem may trouble students. She pulled down her hair its full length.to for at in空在its前 翻译成汉语并写出该句子的同义句：she cried over her husband so sadly that the great wall fell down Betty said,‘‘I’m listening for Linging and Tony.‘‘【变为间接引语】 英语被动句改为主动句Enough has been done to save the sick boy. 谁可以给我讲一下非谓语动词, The next night,to show you with a good dream怎么读 帮我讲解一下非谓语动词! 谁来讲讲非谓语动词啊(详细点啊) you ,have ,about ,them ,done ,what ( 连词成句）快》》》》》》要意思 He watches TV in the evening.对watches TV提问没有 nice dream with Have a nice dream with you . Nice dream for you请问英文的意思 我词汇3000左右 要去新航道报雅思班 应该报那个班啊 暑假想报雅思班.有说明是要求学员掌握2500~3000词汇量这是什么意思.是相当于什么水平 还有要求掌握4000词汇