telephone is usually free,and the coin-box has slots for coins.To make a call,you pick up the receiver and dial the number before putting any money into the coin-box.When the person whose number you are ringing answers,there will be a special rapid tone called the paytone.As soon as you hear this,you put your money in the box.The paytone then stops, and you can start to speak.To make a trunk call by STD,you dial first the STD code number for the town that you are calling and then the number of the subscriber.For example,the STD code number for trunk calls from London to Bristol is 0272;if you telephone a person living in Bristol whose number is Bristol 294020,you would dial 0272-294020.When your time is up the paytone is repeated;if you wish to continue your talk,you must then put more money into the slot.The length of time allowed is doubled between 6 p.m.and 8 a.m. Now pay phones work slightly differently,however. 5 Besides the STD system,there is also an International Subscriber Dialing service for making telephone calls to most of the countries of Europe,but some calls can only be made from telephones without a coin-box.You can dial direct to many places in France,Belgium, Germany,Luxembourg,the Netherlands,and Switzerland. 6 A special recorded telephone information service is provided every day for visitors to London.This service gives visitors details of the main events of the day in and around London.The information is recorded in four languages:English,French,German and Spanish.When you wake up in the morning and you want to know what the weather will be like in London,dial 246-8901;and,if you want to know time,dial 123. Questions 21-30 are based on Passage 5. 21.Telephone calls in Britain can be classified into two types:local calls and international calls. 22.If you call from London to a subscriber in London,you need to dial 071 first. 23.If you want to know the telephone number of Mr Williams,you need to look it up in the directory for people whose name begins with the letters S to Z. 24.You can usually find a person's name on the left side of the column in a telephone directory. 25.Only the call-boxes in London are now on the STD system. 26.To make a call,you need to put money into the coin-box first and then dial the number after hearing the paytone. 493te1ephone is usually free , and the coin-box has slots for coins. To make a call , you pick up the receiver and dia1 the number before putting any money into the coin-box. When the person whose number you are ringing answers, there will be a specia1 rapid tone called the paytone. As soon as you hear this, you put your money in the box. The paytone then stops, and you can start to speak. To make a trunk call by STD, you dia1 first the STD code number for the town that you are calling and then the number of the subscriber. For examp1e , the STD code number for trunk calls from London to Bristo1 is 0272; if you te1ephone a person living in Bristo1 whose number is Bristo1 294020 , you wou1d dia10272-294020. When your time is up the paytone is repeated; if you wish to continue your ta1k , you must then put more money into the slot. The 1ength of time allowed is doub1ed between 6 p. m. and 8 a. m. Now pay phones work slight1y differently , however. 5 Besides the STD system , there is a1so an Internationa1 Subscriber Dialing service for making te1ephone calls to most of the countries of Europe , but some calls can on1y be made from te1ephones without a coin-box. You can dia1 direct to many p1aces in France , Be1gium , Germany , Luxembourg , the Netherlands, and Switzer1and. 6 A specia1 recorded te1ephone information service is provided every day for visitors to London. This service gives visitors details of the main events of the day in and around London. The information is recorded in four 1anguages: English , French , German and Spanish. When you wake up in the morning and you want to know what the weather will be 1ike in London , dia1 246-8901; and , if you want to know time , dial123. Questions 21-30 are based on Passage 5. 21. Te1ephone calls in Britain can be classified into two types: 10cal calls and international calls. 22. If you call from London to a subscriber in London , you need to dial 071 first. 23. If you want to know the te1ephone number of Mr Williams, you need to 100k it up in the directory for people whose name begins with the letters S to Z. 24. You can usually find a person' s name on the 1eft side of the co1umn in a te1ephone directory. 25. Only the call-boxes in London are now on the STD system. 26. To make a call , you need to put money into the coin-box first and then dial the number after hearing the paytone. 493