The temperature （ ）greatly; the days were very hot while the nights were very cold.
A.changed B.altered C.varied D.reflected
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Scientists have found that scents （ ）efficiency and reduce stress among office workers.
A.enhance B.amplify C.foster D.magnify
The world of education is currently undergoing a massive transformation as a result of the digital revolution. This transformation is similar to the transition from apprenticeship to universal schooling that occurred in the 19th century as a result of the industrial revolution. In the apprenticeship era, most of what people learned occurred outside of school. Universal schooling led people to identify learning with school, but now the identification of the two is unraveling.All around us people are learning with the aid of new technologies: children are playing complex video games, workers are interacting with simulations that put them in challenging situations, students are taking courses at online high schools and colleges, and adults are consulting Wikipedia. New technologies create learning opportunities that challenge traditional schools and colleges. These new learning niches enable people of all ages to pursue learning on their own terms. People around the world are taking their education out of school into homes, libraries, Internet cafes and workplaces, where they can decide what they want to learn, when they want to learn, and how they want to learn.Who will benefit ultimately from this revolution? In America there is a commercial push to sell educational products to consumers who are looking for an edge up in the race for success. This means that technological products and services are popping up all over the American landscape. Education, once viewed as a public good with equal access for all, is now up for sale to those who can afford specialized services and computer programs. We think schools have served America and the world very well. We greatly admire the teachers who have dedicated themselves to helping children from different backgrounds to learn and thrive in a changing world. Schools have made invaluable contributions to the world's development and we think they will continue to do so well into the future.However, we think it is time that educators and policy makers start to rethink education apart from schooling. Education is a lifelong enterprise, while schooling for most encompasses only ages five to 18 or 21. Even when students are in school much of their education happens outside of school. We all know that technology has transformed our larger society. It has become central to people's reading, writing, calculating, and thinking, which are the major concerns of schooling. And yet technology has been kept in the periphery of schools, used for the most part only in specialized cour
If the Americans with their peace talks do get the parties together, their first business will be to arrange a （ ）so that food can move.
A.truth B.trace C.truce D.trap
Last night he saw two dark （ ）center the building, and then there was the explosion.
A.figures B.features C.sketches D.images
Human beings spend a lot of time trying to figure out what will make them happy, but not nearly enough time trying to （ ）the happiness they already have.
A.hang on to B.put up with C.look down on D.go in for
