七選五。

Before going outside in the morning, many of us check a window thermometer(溫度計(jì))for the temperature. This helps us decide what to wear. 1. . We want our food to be a certain coldness in the refrigerator. We want it a certain hotness in the oven. If we don’t feel well, we use a thermometer to see if we have a fever. We keep our rooms a certain warmth in the winter and a certain coolness in the summer.

Not all the thermometers use the same system to measure temperature. We use a system called the Fahrenheit scale. But most other countries use the Centigrade scale.

Both systems use the freezing and boiling points of water as their guide. 2. .

The most common kind of thermometer is made with mercury(水銀)inside a clear glass tube. As mercury (or any other liquid ) becomes hot, it expands. As it gets colder, it contracts(收縮). That is why on hot days the mercury line is high in the glass tube. 3..

First. Take a clear glass juice bottle that has a cap; fill the bottle with coloured water. Tap a hole in the center of the cap using a hammer and thick nail. Put the cap on the jar. Then stick a plastic straw(吸管) through the nail hole.

4..

Finally. Place a white card on the outside of the bottle and behind the straw. Now you can see the water lever easily.

5..

As the temperature goes down, the water will contract, and the lever in the straw will come down. Perhaps you will want to keep a record of the water lever in the straw each morning for a week.

A. We use and depend on thermometers to measure the temperature of many other things in our daily lives.

B. Thermometers measure temperature, by using materials that change in the same way when they are heated or cooled.

C. Now that you know this rule you can make a thermometer of your own that will work.

D. The water will rise in the straw. As the temperature of the air goes up, the water will expand and rise even higher.

E. They label these in different ways. On the Fahrenheit scale water freezes at 32 degrees and boils at 212 degrees. On the Celsius scale water freezes at 0 degrees and boils at 100degrees.

F. Take wax (you may use an old candle if you have one) and melt some of it right where the straw is struck into the cap to seal(把..粘住) them together.

G. People use thermometers which are made by themselves when travelling around the world.

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If You Get In, Make College Count

As tuition costs rise, with post-undergraduate (本科畢業(yè)后) jobs difficult to find, is higher education worth the cost?

Here is an unfortunate truth: For far too many incoming freshmen, college－any college－is not worth it. Year after year, students fail to get the full value of their tuition.

Many critics blame this cost/value problem on the universities, though each critic might point to a different reason: teachers always think of difficult research, the high costs of athletics, or the popularity of majors that are supposedly not suited to the new job market, to name some of their favorites.

But these are symptoms and not the illness itself. In our experience, the source of the wasted university experience begins with the student. Too often, students make bad choices or, frankly, just not enough great choices.

Too often we meet students who are so exhausted by the business of getting into college that they don’t work hard once they arrive－one of the most common wastes of time and tuition. A poorly constructed transcript (成績單) can be destructive to a student’s education. Failure to engage and build professional working relationships with professors in office hours (which may lead to continued study, internships and more) also hurts the student’s experience.

Another mistake is failing to make use of the many support networks on today’s college campuses. It’s almost embarrassing how many good offerings are rolled into each tuition dollar, but most students don’t know they exist.

Another common point of failure is filling the schedule with too many extracurricular activities as students once did in high school, rather than getting intensely involved in one or two at most. The same can be said of overburdened course loads.

The final great failure we frequently see is the approach students (and their parents) take to selecting a major and accurately seeing its impact on a future career. University systems are not vocational schools. While critics nowadays complain about the attraction of useless majors — and some do exist — more frequently we see too many students pursue a course of study that is not their strength, simply because it seems to have obvious connections to a potential job after graduation.

Rather than perform poorly in a “practical” major and be of little interest as a future job candidate, we say it is better to major in a subject where a student would do well and master the tools of communication and analysis. Students who choose a unique major should complement (使更具有吸引力) that with some well-chosen skill courses, internships and other co-curricular activities that help them with career opportunities after college.

So, is college worth it? It can be. Studies show that college graduates have many advantages — material, social and emotional — that can lead to greater success later in life.

To get the full value out of college, students must be as diligent and creative about getting out of college as they were about getting in. After all, the most beautiful, Olympic saltwater pool does you no good if you don’t know how to swim.

Introduction

Students in college are 1. to get the full value of the constantly rising tuition. Critics hold that the universities are responsible for the problem, but actually it is students themselves that are to 2. .

Students’

mistakes

● Students tend to stop working hard after3. to college.

● Students fail to take advantage of the 4. that colleges provide.

●5. in too many extracurricular activities makes students overburdened with course loads

● Students can’t adopt a correct6. to select a major and accurately see its future potential.

Author’s advice

● Take personal 7. and strength into account.

● Learn the skills of communication and analysis.

● Choose some skill courses, internships and other co-curricular activities to 8. future career chances.

● Most importantly, 9. and creativity.

10.

Students, and only students themselves, can get the best out of college, as long as they learn the skills to swim in the beautiful pool of college.

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