图是一种温度自动报警器的原理图。制作水银温度计时插入一段金属丝，当温度达到___

Is there something that you’ve always wanted to try but just never had the time? Well, make plans to try it now since you are on summer vacation．Not all vacations call for taking a tour bus to take photos of famous landmarks. Some vacations allow you plenty of opportunities to learn.
The most difficult aspect of a learning vacation vacation may be choosing one because the possibilities are endless．If you enjoy cooking, various companies can take you to Italy, France, Spain, Mexico or even Peru. Once there, you can learn to prepare the local cuisine（烹饪）. Trips are often planned to fit in with local food festivals or special events.
The term “learning vacation” often brings language to mind. The best way to learn a language is in an environment where it’s spoken. Study Spanish, French or English. Or attempt a more unusual language like Polish, Estonian or Thai. You’ll be able to learn about the country and absorb the culture at the same time.
If you are fond of sports, you can polish your skills or learn new ones. Golf and tennis schools welcome players of all levels. If you want a bigger thrill, you can learn to surf, go climbing or race cars. It’s even possible to learn the art and techniques of bull fighting while on vacation!
You can also discover our inner artist. Many places offer painting classes in different mediums. The scenic locations of the schools offer plenty of subjects that provide inspiration for practice.
If you prefer capturing the world on film, take a photography vacation. Travel with a small group to photograph beautiful animals or scenery. You can also practise your technique on people or at historical sights.
Once you decide on a vacation, choose a company carefully. Request names of recent customers you can contact, and then ask them for an evaluation. The more you know before you go, the better prepared you’ll be. Then go out and learn something!
56．Why is it hard for you to decide on a learning vacation?
A．Because it is hard for you to make plans.
B．Because the possibilities are unlimited.
C．Because there are many good foods from abroad.
D．Because there’re too many food festivals or events.
57．The advantages of learning a language in its native country is that          .
A．the environment is fit for you to use the language
B．you are able to learn the original foreign language
C．native speakers offer you a lot of chances to practise
D．you can learn the language and experience its culture
58．Which of the following sports suit you if you don’t like thrills?
A．Car racing.         B．Playing tennis.   C．Rock climb.         D．Surfing.
59．The structure of the text would be          .

 
60．The purpose of writing the text is to         .
A．advertise some popular summer programmes
B．encourage readers to have a good time relaxing
C．offer some tips on how to enjoy a learning vacation
D．attract more readers to spend summer time learning