阅读理解 Su Hua is studying at Cambridge, UK.She has bought a bicycle and is worried about security.Her friend, Kate, found this article and sent it to her. Introduction A lot of crime is against bicycles.About 150,000 bicycles are stolen every year and most are never found.You can pr this happening by following a few careful steps. Basic Security Do not leave your bicycle in outoftheway places.Always lock your bicycle when you leave.Secure it to lampposts or trees.Take off smaller parts and take them with you, for example lights and saddles (车座). Locks Get a good lock.There are many different types in the shops.Buy one that has been tested against attack.Ask for a recommendation from a bike shop. Marking Security marking your bike can act_a_deterrent_to_a_thief.It can also help the police find your bicycle.It should be clearly written and include your postcode and your house or flat number.This will provide a way to identify your bicycle. Registration There are a number of security companies who will help mark your bicycle for you.They will then put your registration number and personal details on their computer database.Then if your bicycle is found it will be easy to contact you. Finally Keep a record of the bicycle yourself: its make, model and registration number.You can even take a photograph of it.This will prove the bicycle belongs to you.1. Which part of the text gives you information on how to lock up your bicycle when you leave it?A. Locks. B. Marking.C. Registration. D. Basic Security.2. The underlined phrase "act as a deterrent to a thief" means ________.A. help you recognize your bikeB. help the police find your bicycleC. stop someone stealing your bicycleD. stop you worrying about your bike3. The article advises you to keep a record of your bicycle ________.A. in the bike shop and your computerB. in the police station and a security companyC. in a security company and your universityD. by yourself and in a security company4. What can we know from this article?A. Lots of bicycles are stolen every year and few of them are found.B. If you take off smaller parts of your bike, they will be stolen easily.C. Most locks in the shops have been tested against attack.D. Security marking your bike makes it easy to contact you for the finders.5. The main purpose of this article is ________.A. to tell you what to do if your bicycle is stolenB. to suggest ways of keeping your bicycle safeC. to give you advice on where to buy a good lockD. to say why you shouldn't keep your bicycle in a quiet place