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A. Fill in the blanks with the words given below. Change the form where necessary. organic considerable enthusiasm inevitably consume shift sustainable eliminate 1. Michael has already spent __________ amount of money and time in Barcelona. 2. ______ farming is better for the environment. 3. There has been a ____ in fashion from formal to more informal dress. 4. The proposal aroused little __________ in the group. 5. Children ________ make mistakes, unconsciously or intentionally. 6. We have no right to _______ happiness without producing it. 7. The creation of an efficient and _________ transport system is critical to the long-term future of London. 8. The NGOs, the non-governmental organizations began to seriously deal with the problems, but they can only marginally reduce, not _______ the hazards.
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【简答题】新媒体软文营销的特点。
【简答题】设随机变量X的概率密度为 , (1)求常数k;(2)求分布函数F(x). 解:(1)由 知: , 即 k= . (2) 1x<-1时,F(x)=y6; 2-1≤x<2时,F(x)=; 4x≥2时,F(x)=y12. 即: . 这里, y1=,y2=,y3=,y4=,y5=,y6=, y7=, y8=,y9=,y10=,y11=,y12=.
【简答题】设随机变量X的概率密度为 , (1)求常数k;(2)求分布函数F(x). 解:(1)由 知: , 即 k= . (2) 1x ; 4x≥2时,F(x)=y12. 即: . 这里, y1= ,y2= ,y3= ,y4= ,y5= ,y6= , y7= , y8= ,y9= ,y10= ,y11= ,y12= .
【简答题】2019年3月21日至26日,对( )、( )和摩洛哥进行国事访问,与三国共同播种务实合作新希望,共同打造务实合作新亮点。
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