_______ is believed, all the scientists subsc...

_______ is believed, all the scientists subscribe to the view ______ the increase in the earth’s temperature is due to the burning of fossil fuels to produce energy.

A. It;   \      B. As ;  that      C. It;  if    D. As;  whether

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课文语法回顾

All scientists subscribe to the view that the increase in the earth’s temperature is due to the burning of fossil fuels like coal, natural gas and oil to produce energy. Some byproducts of this process1. (call) “greenhouse” gases, and the most important one of2.is carbon dioxide. Dr. Janice Foster explained “There is a natural phenomenon3.is called the greenhouse effect. This is when small amounts of gases in the atmosphere, like carbon dioxide, methane and water vapour trap heat from the sun and therefore warm the earth. 4.for the greenhouse effect, the earth would be about 33 degrees Celsius cooler　 than it is. So, we need those gases. The problem begins when we add huge quantities of extra carbon dioxide into the atmosphere. It means that more heat energy tends to be trapped in the atmosphere 5. (cause) the global temperature to go up.

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阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

All scientists subscribe 1.　　　　　　　　 the view that it is human activities that have caused the global warming. Huge 2.　　　　　　　　 (quantity) of carbon dioxide produced by burning fuels like coal, natural gas and oil 3.　　　　　　　　 (result) in the "greenhouse effect". All scientists also agree that the levels of carbon dioxide keep on 4.　　　　　　　　　　 (increase), so more heat energy tends to be 5.　　　　　　　　　　 (trap) in the atmosphere. 6.　　　　　　　　　　 the scientists have different attitudes towards this phenomenon. On the one hand, some think the 7.　　　　　　　　 of increasing the temperature by 5 degrees would be a catastrophe. On the other hand, others are 8.　　　　　　　　　　 to this view and believe that there will be few bad environmental 9.　　　　　　　　　　 caused by more carbon dioxide. On the contrary, they think it will be beneficial to plants, crops and a greater range of animals, 10.　　　　　　　　　 will make people's life better.

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We all love to take photographs. it is a simple way to capture (捕捉) a special moment or1.amazing view. Traditional cameras 2. (use)to take pictures in the past decades. But the biggest change has come 3. the development of digital technology. Now we have the smartphone4.has made taking photos 605. (quick)and easier. It's enabled us to take a photo and review it instantly, to handle it using software and to share it like never before-6. (particular)on social media.

Does that mean the traditional camera will eventually become out-of-date? 7.(figure)from Japan show shipments (运送) of digital cameras from companies like Canon and Nikon have dropped 39% year on year. But Phil Hall, editor of TechRadar, thinks there's nothing8. (worry)about because producers are looking at higher-end cameras.

Certainly, the9. (grow)of smartphones opens our eyes to the creative possibilities they provide. But whatever camera viewfinder (取景器) we end up 10. (look)through, it is important to remember the basics of photography and get your subject to say “cheese!”

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_____ is known to us all is that the old scientist, for _____ life was hard in the past, still works very hard in his eighties.

A. As; whom               B. What; whom                 C. It; whose                        D. As; whose

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_____ is known to us all is that the old scientist, for _____ life was hard in the past, still works very hard in his eighties.

A. As; whom          B. What; whom             C. It; whose                  D. As; whose

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This is the new plan all the scientists want to see ________.

A. carried out        C. carrying out        C. to carry out        D. carry out

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____ is known to us all that the old scientist , for ____ life was hard in the past, still works hard in his eighties.

A. It, whom      B. As, whom    C. As, whose       D. What, whom

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Nearly all the people ________ believe confidence is the key to success.

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______ is known to us all, the old scientist, for ______ life was hard in the past, still works hard in his eighties.

A. It; whom B. As; whom C. As; whose D. It; whose

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