人们考察南极地区应选择的最佳时期为( )
A:3月份前后
B:6月份前后
C:9月份前后
D:12月份前后
“打倒列强,除军阀;国民革命成功,齐欢唱…”这首慷慨激昂的《国民革命歌》唱响于( )
When I was about 12 years old, I really wanted a new bike! I 1 my parents my birthday wish,but I knew there was little hope because my family could 2 have that money.On my birthday my parents told me they had my 3 outside in the back yard. At once I 4 out to the yard. There was my bike, 5 it wasn’t the bike that I thought it would be. This one was pink, old and worn with age. It was so 6! I thought I 7 my parents’ feelings because I could see the disappointment 8 their faces and I was sure they could see it on mine. I 9 the old bike and rode it, feeling 10 that I had made my parents feel this way. So I put on a smile, rode as fast as I could and didn’t 11.As time went by, I began to understand my parents gave me 12 much more than just a rusty(生锈的)old bike. They gave me a life lesson about 13. When you give something out of love, it doesn’t matter what it is in fact. What matters is the love that is in it. I like to remember this 14 because giving a gift is not about money. It’s about how much love you can feel from it. Do remember, a gift that 15 two dollars isn’t any less valuable(有价值的)than one that costs one hundred dollars, or even more.
先化简(2x﹣1)2﹣(3x+1)(3x﹣1)+5x(x﹣1),再选取一个你喜欢的数代替x,并求原代数式的值.
—________ 908-7653.