说明，以下句子是我从真题选取的，大部分来自新题的阅读和听力段子。这些句子含有地道的英语表达方式，而且大多是较长的复合句，现把它们摘抄出来，集中进行诵读，对增加语感应该有所裨益，同时对写作也应大有帮助。由于是手工敲入，可能会有一些拼写错误，敬请谅解！现在只摘抄到98年5月，会陆续把以后的补充进来。

Ichthyosaurs had a higher chance of being preserved than did terrestrial creatures because, as marine animals, they tended to live in environments less subject to erosion.


The quality of preservation is outstanding, but what is even more impressive is the number of ichthyosaur fossils containing preserved embryos.


After toiling up the Missouri all summer, the group wintered near the Mandan villages in the center of what is now North Dakata.


Lewis and Clark brought back much new information, including the knowledge that the continent was wider than originally supposed


Using only stone and wood tools, and without benefit of wheels or draft animals, the builders quarried ton upon ton of sandstone from the canyon walls, cut it into small blocks, hauled the blocks to the construction site, and fitted them together with mud mortar.

The rocks of the crust are of very different ages. Some continental rocks are over 3,000 million years old, while those of the ocean floor are less than 200 million yeas old.


Given that two-thirds of the Earth’s surface is water and that marine lives at all levels of the ocean, the total three-dimensional living space of the ocean is perhaps 100 times greater than that of land and contains more than 90 percent of all life on Earth even though the ocean has fewer distinct species.


Science involves imagination and creative thinking as well as collecting information and performing experiments.


Science is built with facts just as a house I built with bricks, but a collection of facts cannot be called science any other than a pile of bricks can be called a house.

In the early nineteenth century, the knowledge of the physics of heat, which was essential to a science of refrigeration was rudimentary.

Rapid industrialization and increased geographic mobility in the nineteenth century had special implications for women because these changes tended to magnify social distinctions.


Anthropology is a science in that anthropologists use a rigorous set of methods and techniques to document observations that can be checked by others.


With the growing prosperity brought on by the second world war and the economic boom that followed it , young people married and established households earlier and began to raise larger families than did their predecessors during the Depression.

These researchers have sought to demonstrate that their work can be a valuable tool not only of science but also of history, providing fresh insights into the daily lives of ordinary people whose existences might not otherwise be so well documented.


Technical difficulties aside, crow research is daunting because the ways of these birds are so complex and various.

It was not until after the Second World War that physicists began trying to make stimulated emission dominate.

Deeper still, the pressure is even more intense, preventing the rock from melting in spite of a higher temperature.

The range of the New York canal system was still further extended when the states of Ohio and Indiana, inspired by the success of the Eric Canal, provided water conncetions between Lake Eric and the Ohio River.

It is commonly believed that in the United States that school is where people to get an education. Nevertheless, it has been said that today children interrupt their education to to school. The distinction between schooling and education implied by this remark line is important.

The states encouraged internal improvements in two distinct ways: first, by actually establishing state companies to build such improvements; second, by providing part of the capital for mix public-private companies setting out to make a profit.

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