【简答题】完形填空。(10分) Life in the 21st century will be different from that in the 20th century, because many changes in the new century, what will the changes be? First, the population is growing very fast. Ther...
【单选题】若函数 y= 2x-3,(x>0) f(x),(x<0) 为奇函数,则f(x)的解析式为( )
【单选题】Peter is not fit. He felt as if he couldn ’ t _ after he ran only 100 metres
【单选题】若f(x)=3x 2 -x+1,g(x)=2x 2 +x-1,则f(x)与g(x)的大小关系是 [ ]
【单选题】一般来说,依据( )开展调研往往是有其局限性。 A. B. C. D.
【简答题】Soy will become one of the most popular foods in the 21st century.
【单选题】( )对中国地理教育发展做出很大贡献,任教南京高等师范学堂,不仅介绍西方近代地理学知识,还对地理教学法进行研究。