单选题It is ______ that you ware to pass the examination with the down loaded thesis.

单选题We are ______ our honour to help those who need our help.

单选题What did the man give the woman?

单选题In this section, you will hear eight short conversations between two speakers. At the end of each conversation you will be given 10 seconds to answer each of the following eight questions.

单选题I could help him with that, but I would sooner he ______ it by himself.

单选题Our office has recently ______ to a new computer system.A. alteredB. convertedC. transformedD. modified

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单选题The accident ______ downtown yesterday resulted from the driver's carelessness.

单选题The example of the Apollo Ⅱ moon launch is given to illustrate that ______.

单选题The word "returns" in paragraph three can be best replaced by

单选题 In this section, you will hear several passages. Listen to the passages carefully and then answer the questions that follow. Questions 11 to 13 are based on the following passage. At the end of the passage, you will be giv en 15 seconds to answer the questions. Now, listen to the passage.

单选题The man has not been able to ______ recently.

单选题{{B}}TEXT C{{/B}} Venus, one of the four inner planets of our solar system, is the closest body in the sky apart from the Moon, sometimes coming only 40 million km from the Earth. Thus, in the not- so-distant future, when man has colonized the Moon, he will start looking at Venus as his next step into space. As it is now, Venus's environment is totally unfavourable to human life. Its surface temperature is almost 480℃. Its face is almost completely hidden from view by poisonous clouds of 90% carbon dioxide. But scientists have a simple plan which, they predict, could make Venus habitable. With the help of rockets, they plan to bombard the carbon dioxide clouds with colonies of blue-green algae. Experiments carried out on Earth have proved that blue-green algae can survive and reproduce normally in such an environment. The algae will consume the carbon and liberate the oxygen. They reproduce so quickly that the carbon dioxide could be broken down within one year. After that, the surface of Venus will be partly visible to telescopes on Earth. The increase in oxygen will have spectacular effects on the desert planet. As oxygen re- places the carbon dioxide, the sun's infra-red radiation, which up to that moment was trapped under the clouds of carbon dioxide, will escape into space and the temperature of the lower atmosphere will decrease. Soon, water will collect from the atmospheric vapor and rain will start falling for the first time. That first rain will never reach the surface. It will vaporize into steam high up in he Venusian atmosphere, but it will have a very important effect. It will lower the ground temperature, perhaps by 35℃. Soon the rain will fall again and again, until the ground temperature is about 70℃. Then the "Big Rain" will strike the soil of Venus for the first time and the clouds will partly clear away, leaving an oxygen-rich atmosphere and a temperature cool enough to sustain hardy plants and animals from Earth.

单选题 Questions 17 to 20 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now, listen to the passage.

单选题Grocery store price lists are updated by______.

单选题It took a lot of imagination to come up with such a(an) ______ plan.