综合类教程汇总和更新

　　下面有3篇短文，每篇短文后有5道题。每道题后面有4个选项，请仔细阅读短文并根据短文内容回答其后面的问题，从4个选项中选择l个最佳答... [查看全文]

　　下面有3篇短文，每篇短文后有5道题。每道题后面有4个选项，请仔细阅读短文并根据短文内容回答其后面的问题，从4个选项中选择l个最佳答... [查看全文]

From the beginning, water has furnished man with a source of food and a highway to travel upon. The first __1_... [查看全文]

admit – acknowledge 承认allow – permit 允许state – declare – announce 宣布，声明regret –... [查看全文]

1.to advantage 有利的，使优点更加突出地2.have an advantage over 胜过have the advantage of 由于……处于有利条件have the... [查看全文]

harness——utilize利用hailed——acclaimed向...欢呼, 致敬, 招呼hazard——danger冒险, 危险, 冒险的事horrify——terrify 使恐怖,... [查看全文]

Human Space ExplorationWhile scientists are searching the cause of the Columbia disaster, NASA is moving ahead wit... [查看全文]

Japanese Drilling into Core of EarthIn what resembles a journey to the center of the Earth, Japanese scientists ... [查看全文]

Plant GasScientists have been studying natural sources of methane for decades hut hadn't regarded plants as a... [查看全文]

A Sunshade for the PlanetEven with the best willl in the world, reducing our carbon emissions is not going to ... [查看全文]