2022英语周报高考外研38期答案

3.C解析:0~2s时间内,无人机在水平方向做匀加速运动,在竖直方向也做匀加速运动,但初速度不为0,且沿水平方向,则合力与速度方向有夹角,因此,无人机做匀加速曲线运动,A错误;2s~4s时间内,无人机在水平方向做匀速直线运动,竖直方向做匀减速直线运动,则合运动为匀变速曲线运动,B错误;0~4s时间内,竖直方向速度一直为正,即一直向上运动,则t=4s时刻,竖直方向速度为0,所以,无人机运动到最高点,C正确;0~5s内,无人机的水平位移为9m,竖直位移为1.75m,则合位移为√x2+y2,不等于9m,D错误

短文改错I enjoy spend Sundays in a local forest park. I gothere at the least twice a month because every visit isone-of-a-kind. The most attractive part of the visits are theunpredictability. Each time I have different experiences asif there were a director which designed an amazedwho/thatamazingperformance for me. The actors are the energetic liveslived in the forest. I am a wildlife lover and particularlivingparticularlylove observing a variety A birds. Now, even I am inofsenior high school, with lots of school tasks, I still tooktaketime to breathe the clean air in the forest on my sparetime. The forest park is my favorite and it is a place withendlessleasure

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