问题 填空题

用如图所示的实验器材测定小电灯的伏安特性曲线,要求加在电灯上的电压从零开始逐渐增大到额定电压.在题给方框中画出实验所用的电路图,并按电路图用导线把实物图连接起来.

答案

因为要求电电压从零开始变化,故滑动变阻器应采用分压接法;同时因为灯泡内阻较小,电流表应采用外接法;故电路图如图所示;

连接实物图时,先将串联部分连接起来,再并联测量部分,实物图如图所示;

单项选择题 A3/A4型题
阅读理解

B

Singapore’s public transport system is one of the best in the world, so you should have no problem finding your way around like a local. There are three main forms of public transport that you would find in any other major city ---trains, buses and taxis

TRAINS 

Trains run from 6:00 am to midnight. Single trip tickets start at 80 cents. If you buy an EZ-Link cars for $15, you can ride the trains and buses as you like. 

If you need more information, just call Transit Link on 1800 767 4333. 

BUESE 

There are several bus services in Singapore and fares start at 80 cents. Be sure always ask the driver the cost of your ticket as he can not give change. 

If you need help, just call Transit Link on 1800 767 4333. 

TAXIS 

There are three main taxi companies –City Cab(6552 2222), Comfort(6552 1111) and Tibs (6552 8888). Booking can also be easily by calling the numbers listed above. 

TENTAL CARS 

Driving in Singapore is a pleasure and if you liked to travel at your own pace, renting a car is a good choice. Renting takes away the hassle of getting to places around Singapore. Just sit back and enjoy the city. It also means you’ll get to see a lot more that a trains or a bus won’t let you see. 

For car rental, call Avis on + 65 6737 1668. 

45  By an EZ-Link card, you can take_______.

A  both buses and trains                          B  only trains

C  both buses and taxis                           D  only rental cars 

46  When you take a bus there, always remember to________.

A  take your own license with you           B  ask the driver how much your ticket is

C  buy the bus map of Singapore             D  book your ticket ahead of time 

47  What does the word “hassle” mean in Chinese?

A 麻烦             B 乐趣                     C 景点                     D 费用 

48  What do you know about traveling in Singapore from the passage?

A  A local has no trouble finding his way around.

B  It’s much cheaper to go around by bus than by train.

C  You can see a lot more in Singapore only by renting a car.

D  It’s very convenient for visitors to travel in Singapore.