初一英语周报2022-2022七年级新目标29期答案

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

15:【解析】由带电粒子在磁扬中运动的偏转角可知带电粒子运动轨迹所对的圆心角为60°,因此由几何关系得磁场宽度L=Rsin60(1分)耒加磁场时有L=vt(1分)由洛伦兹力提供向心力可得qB=mR(1分)联立可得比荷又sin 6cBr(2分)带电粒子在磁场中运动的周期T-=2t604√3xt(3分)

以上就是初一英语周报2022-2022七年级新目标29期答案，更多英语周报答案请关注本网站。