2022 英语周报 高二 课标综合（OT） 48答案

书面表达One possible version:Dear Jack,I am happy to know that you are to spend some time in China. I recommend you stay in Beijing, the capital andcultural center of China.First of all, there are a lot of museums where precious relics of historical interest are waiting for you toexplore. Besides, the exceptional Peking Opera performances there are also what you can t miss. And the city isalso best known for its abundance of ancient buildings, which are still well preserved.I hope that you will have a good time in China.Yours sincerely,Li Hua

22解:(1)设曲线C2上任意一点的极坐标为(p,0),因为将曲线C2绕极点逆时针旋转4后得到曲线C1,所以(0x)在曲线P=2(x)上,即=2in(x+x),所以曲线C2的极坐标方程为p=2cos.(5分)(2)设P(1,0),Q(2,0),因为OP=4OQ,所以p1=4P2,因为p=1-c0s6P=2c980,所以cOs 68cos6,解得cosθ=所以|OP|=-1=4(10分)

以上就是2022 英语周报 高二 课标综合（OT） 48答案，更多英语周报答案请关注本网站。