For as long as humans have raised crops as a source of food and other products, insects have damaged them. Between 1870 and 1880, locusts ate millions of dollars' worth of crops in the Mississippi Val
Growth of trade will depend greatly on availability of energy sources. There may still be a trillion barrels of recoverable oil in the Middle East. But the oil crisis of 1974 has ____1____to renewed i
According to the latest research in the' United States of America, men and women talk such different languages that it is like people from two different cultures trying to communicate. Professor Debor
Improbable as it may seem, an increasing number of Germans are giving up their elegant Mercedeses, sleek BMWs and ferociously fast Porsches and getting behind the wheels of imported American models &n
大学英语六级考试阅读练习题90篇（附答案）汇总 大学英语六级考试阅读理解模拟练习题1（附答案） 大学英语六级考试阅读
Sugar is so much a part of our modern life that we only really think about it when, for some ___1___ , we cannot obtain it. It has been known to man for at least 3,000 years, but has ___2___ into comm
The productivity of Americans employed in private businesses has declined. The productivity of workers in countries such as Japan and Germany is increasing. American machine tools, on average, are old
教育部考试中心：2014考研英语阅读模拟练习题汇总 教育部考试中心：2014考研英语阅读模拟练习题（1） 教育部
2013年考研英语阅读提分练习题汇总 2013年考研英语阅读提分练习题1（附答案） 2013年考研英语阅读提分练习题6（附答案）
Personality is, to large extent, inherent -- A-type parents usually bring about A-type offspring. But the environment must also have a profound effect, since if competition is improtant to the parents