四级暑期练习题：完形填空

　　Wise buying is a positive way in which you can make your money go further. The 1 you go about purchasing an article or a service can actually 2 your money or can add 3 the cost.

　　Take the 4 example of a hairdryer. If you are buying a hairdryer, you might 5 that you are making the 6 buy if you choose one 7 look you like and which is also the cheapest 8 price. But when you get it home you may find that it 9 twice as long as a more expensive 10 to dry your hair. The cost of the electricity plus the cost of your time could well 11 your hairdryer the most expensive one of all.

　　So what principles should you 12 when you go out shopping?

　　If you 13 your home, your car or any valuable 14 in excellent condition, youll be saving money in the long 15.

　　Before you buy a new 16, talk to someone who owns one. If you can, use it or borrow it to check if it suits your particular 17.

　　Before you buy an expensive 18, or a service, do check the price and 19 is on offer. If possible, choose 20 three items or three estimates.