Question

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余项。（说明：E请填涂AB；F填涂CD；G填涂ABC）

Before going outside in the morning, many of us check a window thermometer (温度计) 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 inside a clear glass tube. As mercury (or any other liquid) becomes hot, it expands. As it gets colder, it contracts. 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 colored 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 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. Now that you know this rule you can make a thermometer of your own that will work.

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

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

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

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 them together.

G. 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 degree and boils at 100 degrees.

Answer

1.C

2.G

3.A

4.F

5.D

【解析】

试题分析:本文讲述了温度计的重要性，在生活中应用广泛。

1.C考查对上下文的理解和推理判断能力。从后面的句子：We want our food to be a certain coldness in the refrigerator. We want it a certain hotness in the oven. 可知我们需要温度计衡量生活中很多东西的温度，C选项We use and depend on thermometers to measure the temperature of many other things in our daily lives.，符合，故选C。

2.G考查对上下文的理解和推理判断能力。从前面的句子：Both systems use the freezing and boiling points of water as their guide.可知它们的冰点和沸点是不一样的， G选项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 degree and boils at 100 degrees.，符合，选择G.

3.A考查对上下文的理解和推理判断能力。从下面一段的内容，可知我们可以自制温度计，A选项Now that you know this rule you can make a thermometer of your own that will work.，符合，故选A。

4.F考查对上下文的理解和推理判断能力。从前面的句子：Then stick a plastic straw(吸管) through the nail hole.可知下一步是把吸管和盖子连在一起 ，F选项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 them together.，符合，故选F。

5.

考点：考查信息匹配

【名师点拨】

高考七选五解题方法

1.通读全文，了解文章大意。这是一个泛读的过程，目的是了解文章大意，为以后的理解做铺垫。

2.分析句型，了解语法构成

3.当我们了解了文章大意后，要明确每一个空是填一个整句子还是半个句子。这一点十分重要，它能够帮助我们迅速确定某些空的选项范围，比如，有一个空的结尾处没有标点符号，后文紧跟着一个句子的后半部分，很显然这时我们需要填的是半个句子，这时便可以在七个选项中找到是半个句子的选项，从而缩小选择范围。

4.明确关联关系。任何句子都是要么和上文有联系，要么和下文有联系，要么和上下文都有联系。比如第34小题，This helps us decide what to wear. _______. 可从下文We want our food to be a certain coldness in the refrigerator. We want it a certain hotness in the oven. 我们需要我们的食物在冰箱中保持一定温度，在锅子里又是热的。可知我们需要温度计来量生活中很多东西的温度。再如第35小题，可根据前面的Both systems use the freezing and boiling points of water as their guide.可知它们的冰点和沸点是不一样的，下文便开始讨论它们的冰点和沸点。

5.带入通读，复查

做完题目切忌直接离开，这是我们很有必要将自己修正好的文章通读一遍，将其看做一片行文通顺语意连贯的文章来读，这是如果感到有含义不连贯的地方，很有可能是我们填错了空，就要复查了，注意：七选五的特点在于，错一道，往往还会错另外的一道或几道，我们叫做"连错"，所以当你发现自己有一处填的有问题时，一定要同时检查其他空。