[单项选择]The minerals boom has brought about an economic boom, which in turn has meant that real estate values have ______ to record levels.
A. rose
B. raised
C. risen
D. been raising

[填空题]The computer has brought about surprising changes__________________(在我们处理信息的方式上).

[单项选择]Climate change has brought about such problems as bleaching-induced (47)______ of corals. Bleaching occurs when corals are stressed by high temperature or other (48)______ changes, and lose their symbiotic algal cells. When they lose these cells, which provide the corals with essential (49)______ and give them their color, they can die. Reefs are important for livelihoods, and fisheries and tourism, and are the main (50)______ along the eastern African coast as well as (51)______ many of the islands of the Western Indian Ocean. In college during the 70s, I joined an expedition to the Malindi Marine Park -- one of the first MPAs (marine protected areas) to be established in Africa-where we (52)______ in a well-protected reef. But over the years, that reef has been completely devastated by the bleaching. It was truly (53)______ to see such a vibrant and healthy reef reduced almost to the status of an unprotected one. Recently, coral reefs have received a great deal of atte

[填空题]The recession has brought about an abrupt change of mood on university campuses up and down the country. A five-year boom in the graduate job market has been stopped in its tracks and salary expectations. No wonder only one in five of 16, 000 final year students questioned for a survey by High Flyers Research said that they expected to get a job for which they are qualified by the time they graduate.
Despite the gloom, the financial case for going to university remains compelling. International surveys continue to show the salary premium enjoyed by UK graduates over those who choose not to go to university as among the highest in the world. In the post-recession world, a university degree is likely to be even more of an advantage to job-seekers than before. But choosing the right degree course and the right university will also be more important than ever. This does not necessarily mean that students should go only for job-related degrees, but it will put a premium on marketable

[单项选择]Concerning changing the situations brought about by things we regret on, Reverend holds that ______.
A. it’s very simple
B. it’s very difficult
C. it’s impossible
D. it depends

[单项选择] Changes in regional climate brought about by large-scale deforestation in the eastern lowlands of Central America are affecting weather downwind in the mountains, imperiling ecosystems there. The so-called cloud forests of Monteverde lie along the crest of Costa Rica’’s Cordillera de Tilaran mountains. These habitats rely on the almost perpetual fog that forms as moisture-laden Caribbean winds rise up the eastern slopes of the mountains and pass through altitudes at which clouds condense, says Robert O. Lawton, an ecologist at the University of Alabama in Huntsville. The humidity in those breezes is enhanced by moisture expelled from the leaves of lowland forests. By the early 1990s, more than a century of deforestation had left only 18% of the Costa Rican lowland forests east of the peaks untouched. The pastures that replaced forests don’’t humidify the winds as well as forests do and are better at warming the atmosphere. As a result, the winds off these pastures must ri
A. become scarce
B. rise about 200m above today’’s height
C. remain the same
D. destroy the ecosystems there