【书面表达2】What a mess! "April frowned. Though she had been longing for a non-Earth Daybirthday, it was difficult to turn a blind eye to such a mess. She turned around to her friends, " Howabout picking the trash first? "" Her proposal was quickly approved by others and soon they were inbusiness. Aprils mum grabbed some gloves from the trunk while her dad managed to removethose shopping bags in the trees. With the bags, April and Bailey collected scattered bottles. Bythe drain, Josie and Tyler made great efforts to clear the blockage Many hands make light workIn a short while, three bags were filled with cans and newspapers to recycleApril looked at the collected rubbish and smiled. Then she looked up at her friendsTheir neat clothes for the birthday party were soaked with sweat. but their faces glowed withsatisfaction. It felt so good to do something for the earth. Happy Earth Day, everyone, " said AprilNow we are ready for Maze Craze. ""Happy Birthday, April! "shouted her friends. "Im so luckyto have been born on Earth Day!("Wow, another earthy birthday, )April thought to herself."AComposts Carnival may be a good idea for next year.
11D当1≤x<2时,y=-x2 5单调递减,f(x)>f(2)=2-log2=1;当x≥2时,f(x)单调递减,故f(x)在[1, ∞)10.C设OC|-1=√32 42-1=4,所以|PM|m=|POm-1=4-1=3,所以PA PB==2×3MA PM MB上单调递减,由f(1-x)=f(x 1),得f(x)的对称轴方程为x=1.若对任意的x∈[t,t 1],不等式f(x)≤(-r径的圆上,PPA PB=PM x)恒成立,所以|x-11≥11-t-x-1|,即(1-x)2≥(x )2,即2( 1)x 2-1≤0对任意的x∈[1恒成立,所则(x)=1-1二x1,所以g(x)在(O,1)上单调递减,在(1, ∞)上单调递增,所以以12( 1)( 1) 2-10,解得一1≤≤1.故选D2(t 1)t 2-1≤0的上方,由x=b,则x=b由血n曲线y=In I1令() <解得< p>解得<>
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