英语周报fjm高一课标2022答案

据前面的内容可知,作者认为自已已经(alcd矩文改sA2.thie6xwho64.wthd6s.too6.bony67.abTomb sweeping Day one of the most important Chinese traditional festival. According to ancientres A forbidden on that day and people had to cat cold food withour lighting a fireThere are several activities people do during the festival. Planting trees is a good one. Every year, muchmanywereces are planted all over China. Another popular activity is spring outing, which is a good chance to do exercise.The wether is warmly and it is pleasant to walk in the fields in the. springEvery year.inelebrate of the festival, our school organizedganizes the students to climb mountains. We alwayscelebrationng English. It

2.(1)解:由e==202,a2=b2 可得c=2√b,由△PF1F2面积的最大值为42知,bc=42,解得a=32,b=√2,c=4,∴椭圆C的方程为1分=1(2)证明:联立,解得M(3,1)5分=1联立得2x2 6mx 9m2-18=0.ly=xx m∴直线l2与椭圆C交于A,B两点,△=(6m)2-4×2×(9m2-18)>0∴-2

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