英语四级阅读教程汇总和更新

　　Federal Express is a company that specializes in rapid overnight delivery of high-priority packages. The first... [查看全文]

　　By 1970, according to a World Wildlife Fund report, only about 4,500 tigers survived throughout the world-half... [查看全文]

　　A remarkable variety of insects live in this planet More species of insects exist than all other animal spec... [查看全文]

　　The Earth comprises three principal layers: the dense, iron-rich core, the mantle made of silicate (硅酸盐) th... [查看全文]

　　The fridge is considered necessary. It has been so since the 1960s when packaged food list appeared with the... [查看全文]

　　A subject which seems to have been insufficiently studied by doctors and psychologists is the influence ofgeog... [查看全文]

　　Japan is getting tough about recycling—and not in the paper and plastic kind of way. Recently, the country ... [查看全文]

　　For centuries, in the countries of south and Southeast Asia the elephant has been an intimate part of the c... [查看全文]

　　Although many of us may feel air-conditioners bring relief from hot, humid or polluted outside air, they pose... [查看全文]

　　If the salinity(含盐量) of ocean waters is analyzed, it is found to vary only slightly from place to place.N... [查看全文]