2022英语周报九年级第34答案

12.D〖解析】富营养化水体中的藻类为单细胞藻类,体积小,数量较大,可用血细胞计数板计数,A项正确;水体出现明显的富营养化主要是由于水体中藻类可吸收的N、P增多,藻类繁殖过快,B项正确;虽然两组藻类都增加,但利用鱼控制的一组比未投入鱼控制的一组藻类密度低得多,说明该控制方法有明显效果,C项正确;控制藻类数量后,水草得到的光照和无机盐增多,促进了水草的生长,D项错误。

第:节长長达(满分25分) Possible versionDate: March 21.2021The annual translation competition on Chinese poetry is going to be held online trom March 2& to 30 byschools English Chub. Any student who would like to participate needs to email the translation totranlslation-202lyahoo.com,andattachano-longer-than-3-minutevideoofpertormingthetranslationinspecially designed scene related to the poem. Then based on ten professional judges decision, there will be afirst-prize winner, two second-prize and five third-prize. The awards are more than wonderful and appealing, suchas Kindles and gil cards of Xinhua BookstoreAll of you, including the overseas students, are welcome to join in the activity. Not only can the experiencehelp you to gain a deeper understanding of Chinese culture and history, but it also gives you an opportunity to showhow well you master both Chinese and English. So what are you waiting for? Just begin your translationThe english Club

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