在四边形ABCD中，AB=CD，要使四边形ABCD是中心对称图形，只需添加一个条

Singapore’s public transport system (公共交通系统) 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 here that you would find in any other big city--trains, buses and taxis.

		TRAINS Trains run from 6 a.m. to midnight. Single trip tickets start at 80 cents. If you buy an EZ-Link card for $15, you can take the trains and buses as you like. If you need more information, just call Transit Link at 18007674333.
BUSES There are several bus services in Singapore and fares（车费）start at 80 cents. Be sure to always ask the driver the cost of your ticket as he cannot give you changes. If you need help, just call Transit Link at 18007674333.
	TAXIS There are three main taxi companies--City Cab（65522222），Comfort（65521111）and Tibs（65528888）.Booking can also be made easily by calling the number above.
RENTAL（租）CARS Driving in Singapore is a pleasure and if you like to travel as you like, renting a car is a good choice. Renting takes away the trouble of getting to places around Singapore. Just sit back and enjoy the city. It also means you’ll get to see a lot more than a train or a bus won’t let you see. For car rental, call Avis on 6567371668.

根据短文内容，选择最佳答案，并在答题卡上按要求作答。
小题1: Buy an EZ-Link card, and you can take __________.

A．both buses and trains	B．only trains
C．both buses and taxis	D．only rental cars

小题2:What is a good choice if you want to travel freely in Singapore?

A．To take a bus.	B．To take a train.
C．To rent a car.	D．To take a taxi.

小题3:If you need to rent a car, you may call __________.

A．65528888	B．6567371668
C．18007674333	D．65522222

小题4:The passage mainly talks about __________ in Singapore.

A．how to rent a car	B．how to take a bus
C．3 taxi companies	D．public transport system

小题5: From the passage, which sentence is true?

A．A local has some 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 easy and convenient for visitors to travel in Singapore.