高考习题练习

高考易错题（2019/11/6）

第1题：将一段导线绕成图甲所示的闭合电路，并固定在水平面(纸面)内，回路的ab边置于垂直纸面向里的匀强磁场Ⅰ中。回路的圆形区域内有垂直纸面的磁场Ⅱ，以向里为磁场Ⅱ的正方向，其磁感应强度B随时间t变化的图像如图乙所示。用F表示ab边受到的安培力，以水平向右为F的正方向，能正确反映F随时间t变化的图像是

A．

B．

C．

D．

【单选题】： A B C D

第2题：B　　
A、world-famousCanadian author, MargaretAtwood, has created the world’s first long-distance signing device(装置), the LongPen.　　After many tiring……from city to city,Atwood thought there must be a better way to do them . She hired some technical experts and started her own company in 2004. Together they designed the LongPen. Here’s how it works: The author writes a personal message and signature on a computer tablet(手写板) using a special pen. On the receiving end, in another city, a robotic arm fitted with a regular pen signs the book. The author and fan can talk with each other via webcams(网络摄像机) and computer screens。　　Work on the LongPen began inAtwood’s basement(地下室).At first, they had no idea it would be as hard as it turned out to be. The device went through several versions, including one that actually had smoke coming out of it. The investing finally completed, teat runs w ere made in Ottawa, and the LongPen was officially launched at the 2006 LondonBook Fair. From here ,Atwood conducted two transatlantic book signings of her latest book for fans in Toronto and New YorkCity.　　The LongPen produces a unique signature each time because it copies the movement of the author in real time. It has several other potential applications. It could increase credit card security and allow people to sign contracts from another province. The video exchange between signer and receiver can be recorded onDV
D、for proof when legal documents are use
D、　　“It’s really fun”, said the owner of a bookstore, who was present for one of the test runs. “Obviously you can’t shake hands with the author but there are chances for a connection that you don’t get from a regular book signing..　　The response to the invention has not been all favorable.Atwood has received criticism from authors who think she is trying to end book tours.But she said, “It will be possible to go to places that you never got sent to before because the publishers couldn’t afford it.” What do we know about the invention of the LongPen
A、It has been completed but not put into use.
B．The basement caught fire by accident.
C．Some versions failed before its test run.

D、The designers were well-prepared for the difficulty.

【单选题】： A B C D

第3题：子口税的征收开始于( )。
A．《南京条约》
B．《虎门条约》
C．《北京条约》
D．《天津条约》

【单选题】： A B C D

第4题：26分)阅读图文材料并结合所学知识，完成下列要求。材料一：移民城市洛杉矶通过三次产业结构调整，成为美国的“科技之都”和全球性经济中心，其电影产业也久负盛名。图4是洛杉矶主导产业演进示意图。