【答案解析】散步燃烧热量，如果你能以中等速度每两天步行一小时，一个月你就可以燃烧掉1.5磅热量，一年就是18磅，当然前提是不能改变你的饮食摄入量。
[解析]
Walking burns calories. If you walk an hour every other day at a moderate pace, you can burn up a pound and a half a month, or 18 pounds a year, providing there"s no change in your intake of food.
问答题
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【正确答案】
【答案解析】当孩子知道他们的任务比较有挑战，而且可能得到奖励时，他们的创造力会得到最大的发挥。但如果连糟糕的表现都能获得奖励，孩子们的创造力就会被扼杀。
[解析]
If kids know they are working for a relatively challenging task with a reward, they show the most creativity. But it is easy to kill creativity by giving rewards for poor performance.
问答题
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【正确答案】
【答案解析】我对你们改进后的产品设计印象深刻。它们外形新颖，尽管工艺技术尚不理想。不过我还是想询问一下报价。
[解析]
I"m impressed by the improved design of your products. They have a novel outlook, though the workmanship is not so desirable. Anyway，I"d like to make an inquiry of the quoted price.
问答题
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【正确答案】
【答案解析】新科技前所未有地将世界紧密地连接在一起。我们的星球现在是个地球村，通过电话或者网络，只需几分钟就可以连接各大洲的任何国家。
[解析]
New technology links the world as never before. Our planet is now a "global village" where countries of all continents are only of a few minutes" distance by phone or internet.
问答题
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【正确答案】
【答案解析】突如其来的龙卷风袭击了佛罗里达西部。每小时240公里的大风把屋顶掀翻，至少1人死亡，100多人受伤。
[解析]
A sudden tornado has struck the western state of Florida. The wind exceeding at times 240 kilometers per hour ripped up the roofs arid left at least 1 person dead and more than 100 injured.