2020—2022英语周报七年级上册外研版答案

题组A1B冲经元细胞处于静息状态时也要吸收葡萄精用于细胞呼吸，因此进行花萄糖的跨膜运输，A错误：葡萄糖分解为丙丽酸发生在细胞质基质中，在有氧存在时，丙酮酸进人线粒体中被彻底氧化分解，而氧气跨要运输的方式是自由扩散（不需要载体），因此线粒休外膜上没有运输葡萄糖分子和氧气分子的截体，B正确：小分于物质通常是通过主动运输或者被动运输进出细胞，但也存在例外，如氨基酸类的神经递质是以胞吐方式出细胞，C错误：植物细胞之间通过胞间连丝可以进行信息交流和物质交换，但人体细胞之间不存在胞间连丝，D错误。

书面表达One possible versionDear PeterI'm writing to invite you to see the Chinese Painting Exhibition to be held in our city.The exhibition will start at 8: 30 am on Saturday and last till 5: 00 pm on Sunday in the city museum It'ssaid that a large number of Chinese paintings, some of which are original works by famous painters like ZhangDaqian and Qi Baishi, will be on display. Besides, there will be various souvenirs to be sold. I know you re veryinterested in traditional Chinese culture, so I can t wait to tell you the news and hope we can go together.Looking forward to your reply.You

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