题目内容

【题目】I was driving on the highway __________a car went past followed by a police car, both of _______ must have been running at a speed of 150 kilometers per hour.

A. as; which B. while; them

C. when; which D. when; that

【答案】C

【解析】考查连词。该句句意：我正在高速路上行驶时，突然一辆被警车跟着的小轿车驶了过去。这两辆车当时的车速都在每小时150公里。故第一空填并列连词when，表示正在/正要/刚做了…突然；第二空应填which引导定语从句，代替上文提到的cars在定语从句中作介词of的宾语，而both of which在定语从句中作主语。所以该题正确答案为C.

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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】______.

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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.

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【1】 Check yourself by answering "yes" or "no" to these questions．

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【3】

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D．Do you move your head from side to side as you read?

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Earlier in the evening the California’s captain, Stanley Lord, had seen another ship approaching. It looked about the size of his own, but attempts to contact the ship failed. It lay dark and mysterious about 10 miles away. At 00:40 am there appeared a sudden flash of light just over the mystery ship. Captain Lord, thinking the ship might need help, ordered his officers to signal the ship by lamp. There was no reply. Three more rockets then exploded, none appeared to go higher than halfway up the mast(桅杆）of the mystery ship. Then at about 2:00 am it turned and slipped into the darkness.

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B. Cyril Evans worked on the mystery ship that night

C. the Titanic started sinking at dawn the next day

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