2022英语周报14期XN答案

8.AC正、负离子随污水向右移动,离子受到洛伦兹对a力,根据左手定则可知正离子向后表面偏,负离子向前表面偏,所以前表面比后表面电势A低,即:N端的电势比M端的电势高,故A正确,B错误;最终正、负离子在电场力、洛伦兹,顶力的作用下达到平衡,则有9E=qB,E=b,不解得:U=Bwb,电压U与污水中离子的浓度无关,选项C正确;污水流量Q=w=BUc,可知污水流量Q与电压表的示数U成B正比,与a、b无关,选项D错误

第三节One possible version:Paragraph 1One night afier the museum closes, Maria appears atthe gate of the museum. She enters the building quietlyusing the security code that Max shared with her. Whendealing with a beautiful woman, men can be so stupid,she laughs to herself. She sneaks into the jewelry exhibitand destroys the alarms. Then she walks up to the glasscase protecting the Black Diamond and unlocks it with thekey she stole from Max. She laughs, "The Black Diamondis mineParagraph 2As she holds the diamond in her hands, the lights inhe museum go on. Then an alarm sounds and a team ofThey have caught her! As a police officerhandcuffs Maria, the lead police investigator comes into theroom. Her surprise is so strong that she is unable to speakIt is Max. She yells, How could I have been fooled byyou, a simple police detective? "Max puts his badge backin his pocket and says, "You can think about that in pris-on, and by the way, I speak perfect Italian

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