第三部分写作第一节One possible versionNoticeOur School English Club is going to hold a traditional Chinesefood party in the school hall at 19: 00 on March 10th. The aim ofthe activity is to introduce traditional Chinese food to the foreignstudents in our school as well as to offer a chance to practiseEnglish. Therefore, all the foreign students in our school will beinvited to the party. Each member is expected to bring a kind oftraditional Chinese food. And each one is supposed to introduce thefood in English fluently. Of course, some microwave ovens willbe available to heat food. Join us with your delicious Chinese foodand show your excellent EnglishHope everyone can join in and have fun!

1.B检测生物组织中的蛋白质时,使用的试剂是双缩脲试剂,应先加入A液摇匀后再加入B液,A正确;黑藻叶肉细胞和洋葱鳞片叶外表皮细胞都可用于质壁分离实验的观察,但洋葱鱗片叶外表皮细胞不含有叶绿体,B错误;提取绿叶中色素时,可以用95%的乙醇但需要加入适量无水碳酸钠除水,C正确;制作洋葱根尖细胞有丝分裂装片时,盐酸和酒精混合液可使组织中的细胞相互分离开来,D正确。

以上就是英语周报高一下学期2020至2021第43期答案，更多英语周报答案请关注本网站。

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