2022英语周报人教新目标九年级30答案

18.A小灯泡稳定发光时,金属棒MN做匀速直线运动,处于平衡状态,由平衡条件得: nisin37= amcos37°+B12y解得v=5m/s,选项A正确;金属棒MN产生的感应电动势E=BLv=2V,选项B错误;电路电流ⅠR1A,选项C错误;小灯泡消耗的功率P=PFR,解得P=1W,选项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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