— Yes, now English     the first language in England and some other countries.

对吸入的空气起预热作用的是（  ）

    Can you imagine printing food? Some scientists are trying to revolutionize the dining experience by doing this. They hope that having a 3D printer in the kitchen will become as commonplace as the microwave. Scientists say that they are easy to use:you simply have to select a recipe and put the raw food "inks" into the printer. You can also change the instructions to make the food exactly how you want it. This means that it would be very quick and easy to create tasty and nutritious meals.

    They say that if people used 3D printers to create meals there would be less need for traditional growing, transporting and packaging processes as food production would be a lot easier. For example, alternative ingredients (原料) such as proteins from insects could be changed into tasty products. And as is known,those traditional activities are not beneficial to our surroundings.

    This technology could also help people who suffer from dysphagia (a swallowing disorder).The patients could program the printer and softer versions would be made so that they would not have trouble swallowing them.

    However,some people think that using 3D-printed foods would be a disaster. It could take away many jobs,including those for growing,transporting and packaging food. Imagine a world where there was no need for farming or growing crops and the same tastes could be printed from a raw "food ink". Likewise, traditional cafes and restaurants might lose business. Also, there are concerns about the nutritional value of printed food:is it really possible to get the nutrients we need from food-based inks?

    What's more, cooking and eating together with family and friends has long been a traditional and enjoyable activity. It is hard to imagine a world where the pastime of cooking is dead and meals can be created at the touch of a button.

    It seems that there is never enough time in the day. But,since we all get the same 24 hours,why is it that some people achieve much more than others?____.

Keep a to-do list.

    You should have a reminder system to tell you when you need to do what.____Carry a pen andpaper wherever you go and write down the things you need to do, including appointments and deadlines.

Set goals.

    Set yourself specific goals,and make sure that they are realistic. To do this, you first need to examine your present situation and assess（判断）which goals are important to you. Have a secondary route to your goals in case you have to change your plans.

Break down (分解）tasks.

    Break goals down into different parts so that you can accomplish them one step at a time____Try to complete one task before you go on to the next.

Organize your time.

    ____A good way to do this is to record everything you do for a week in detail and then examine your record to see how you use or waste your time.

____

    Keep your work space tidy so that you can work efficiently - it's hard to work if things you need to find are buried under a pile of paper! Work to schedule (为...安排时间）so that you can meet deadlines in good time - don't leave everything until the last minute.

A Develop a regular work order.

B. Make a detailed plan.

C. The best time to do something is usually NOW.

D. The answer lies in good time management.

E. Don't try to remember everything in your head.

F.Write these steps down, and try to be as detailed as you can when you do this.

G. Identify areas of your life where you are wasting time and try to reduce them.

小张同学患水痘在家休息，从传染病传播的基本环节分析，使他患病的水痘一带状疱疹病毒是____；与他有过接触的弟弟是____．