2010年六月大学英语四级考试·A卷答案

rest of his life. Already, by paying close attention to and (40) ______ with the world and people around him, and without any school-type (41) ______ instruction, he has done a task far more difficult, complicated and (42)______ than anything he will be asked to do in school, or than any of his teachers has done for years. He has solved the (43) ______ of language. He has discovered it – babies don't even know that language exists – and (44) ______. He has done it by exploring, by experimenting, by developing his own model of the grammar of language, (45) ______until it does work. And while he has been doing this, he has been learning other things as well, (46) _____, and many that are more complicated than the ones they do try to teach him.

Part IV Reading Comprehension (Reading in Depth) (25 minutes) Section A

Directions: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the centre. You may not use any of the words in the bank more than once.

Questions 47 to 56 are based on the following passage.

When we think of green buildings, we tend to think of new ones – the kind of high-tech, solar-paneled masterpieces that make the covers of architecture magazines. But the U.S. has more than 100 million existing homes, and it would be __47__ wasteful to tear them all down and __48__ them with greener versions. An enormous amount of energy and resources went into the construction of those houses. And it would take an average of 65 years for the __49__ carbon emissions from a new energy-efficient home to make up for the resources lost by destroying an old one. So in the broadest __50__, the greenest home is the one that has already been built. But at the same time, nearly half of U. S. carbon emissions come from heating, cooling and __51__ our homes, offices and other buildings. "You can't deal with climate change without dealing with existing buildings," says Richard Moe, the president of the National Trust. With some __52__, the oldest homes tend to be the least

energy-efficient. Houses built before 1939 use about 50% more energy per square foot than those built after 2000, mainly due to the tiny cracks and gaps that __53__ over time and let in more outside air.

Fortunately, there are a __54__ number of relatively simple changes