2022届高三衡阳二模各科试卷及答案

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二、书面表达Apossible versionnotice tOur school isgoing to organize students to takepart in a social practice activity-planting trees nextSaturday.tIn order to help us students realize the value of la-bor and experience the happiness of labor, we are plan-ning to plant trees on a hill located in the suburb of ourI city. We will set off at 9: 00 a. m. at the school gateandigo there by bus. Upon our arrival, a farmer willshow us how to plant trees and keep sate. We will havea picnic lunch there and return at 4: 30 p. m.Please wear a hat to protect yourself from thesun. You're supposed to bring a picnic lunch.The Students'Union

11.A【解析】设A(x0,3x0),O为坐标原点,由题知OF1|≥|OA,OA|=2|x0|,即4x≤2①,又当 b2=1,所以动=3a2 b②,由①②得c-8a2c 4a‘≤0,即e4-8c2 4≤0,解得4-2√3≤e2≤4 2√3,又0