题目内容

【题目】The balloons __________ the festival atmosphere(气氛).

A. added

B. added up to

C. added to

D. add

【答案】C

【解析】句意:气球增添了节日的气氛。add up to意为总计为;add to意为增加;增添。故选C项。

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【题目】Before going outside in the morning, many of us check a window thermometer 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(水银)inside a clear glass tube. As mercury (or any other liquid ) becomes hot, it expands. As it gets colder, it contracts(收缩). 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 100 degrees.

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.

【题目】The government of Norway is planning to build an unusual storage center on an island in the Arctic Ocean. The place would be large enough to hold about two million seeds. The goal is to present all crops known to scientists. The British magazine New Scientist published details of the plan last month. The structure will be designed to protect the world’s food supply against nuclear war, climate change and other possible threats. It will be built in a mountain on the Norwegian island of Spitsbergen. The mountain is less than one thousand kilometers from the North Pole, the northernmost position on earth.

An international group called the Global Crop Diversity Trust is working on the project. The director of the group, Cary Fowler, spoke to New Scientist. He said the project would let the world rebuild agriculture if, in his word, “the worst came to the worst”. Norway is expected to start work next year. The project is expected to cost three million dollars. Workers will drill(钻孔) deep in the side of a sandstone mountain. Temperatures in the area never rise above 0C. The seeds will be protected behind walls a meter thick and high-security door.

The magazine report says the collection will represent the products of ten thousand years of farming. Most of the seeds at first will come from collections at seed banks in Africa, Asia and Latin America. To last a long time, seeds need to be kept in very low temperatures. Workers will not be present all the time. But they plan to replace the air inside the storage space each winter. Winter temperatures on the island are about eighteen degrees below 0C. The cold weather would protect the seeds even if the air could not be replaced.

Mr. Fowler says the proposed structure will be the world’s safest gene bank. He says the plant seeds would only be used when all other seeds are gone for some reason. Norway first put forward the idea in the 1980s. But safety concerns delayed the plan. At that time, the Soviet Union was meeting in Rome of the Food and Agriculture Organization.

【1】The project is meant to ______.

A.increase the world’s food output in the future

B.carry out some scientific experiments on plant genes

C.build an exhibition centre of the world’s plant seeds

D.protect crop seeds from dying out in case of possible disasters

【2】Which of the following statements is TRUE according to the above passage?

A.The government of Norway will perform the project alone.

B.Seeds to be collected there were produced ten thousand years ago.

C.Spitsbergen is chosen because it is free of the nuclear war forever.

D.Temperature is a major consideration when choosing the storage place.

【3】We can infer from the text that _______.

A.Norway had meant to build the storage centre about 20 years before.

B.The storage center will greatly promote world agriculture

C.People will get newly-developed seeds from the center every year.

D.There haven’t been any seed storage centers in the world before.

【4】What is probably the best title of the passage?

A.The Best Place to Store Seeds

B.Noah’s Ark(诺亚方舟)of Plant Seeds in Plan

C.Concerns of World Food Supply

D.A New Way to Feed the World

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