英语周报2022-2022高考，17答案

9.B【解析】由tan(a+p)+tan2a=0,可化为tan[(2atp)-a]+ tan 2a=0, Bp tan(2a+B)-tan a-t1+tan(2a+p)·tanaTan a0,又因为tan(2a+8)=-2,所以tan a2-1ng+2tang=0,化简得tan2a-2tan2a+tan aAtana-2=0,等价于(tana-2)(tan2a+1)=0,解得tana=2.故选B.

第一节One possible version:My dear fellow friends,I'm glad io share with you my ideas about thriftThrift is one of the traditional Chinese virtues. However, in our school, we often see some waste phenomena. Forinstance, there are often a lot of leftovers in the canteen新高考natural resources are limited, so we should save去成时We should start small and form the habit of saving.For example, when leaving the classroom, we should turnoff the lights. When eating in the canteen, we could carrycaSAVAe empty plate campaign, and so onDear friends, let's ask ourselves every day"Are youThanks for your listening

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