单选题A hundred years ago, the game we now call football did not exist. American football started during a game between two colleges. The teams had got together to play what they called "football", but each team played by different roles. One team played what we now call soccer. The other played what we now call rugby (橄榄球) . Both games had been invented a thousand years before. In the first kind of football game ever played, all the men from one village tried to kick a ball into another village. The men of the second village tried to kick the ball into the first. Hundreds of people joined in, running everywhere, running crops and knocking down fences. In time, people agreed on some rules to keep order, but many rules were left open to change. Different rules developed in different places. When the two colleges met to play football, each followed its own rules. They mixed the games together and invented a new game. A hundred years later we call that game American football. In what ways do you suppose the game we know now will have changed in another hundred years?

单选题In swimming it is necessary to ______ the movement of the arms and legs. A. coordinate B. harmonize C. collaborate D. mediate

单选题William Bergman ______.

单选题A: Aren't we supposed to have the meeting begun at 9? Where is the chair?B: ______. A. You know our director. He is always behind schedule. B. I know it's very later C. No. I'll have it tomorrow, not today. D. See you then.

单选题He {{U}}was confronted with{{/U}} many difficulties, which, with the help of his friends, he successfully overcame.

单选题The beautiful ______ are made of a special kind of ______ in these factories.

单选题My mother suggests that we ______ eat out for a change this weekend.

单选题I wonder how much ______ .

单选题The author implies that many people attribute Emily Dickinson's seclusion to ______.

单选题You'll find that the community has ______ great changes since you were here last time. A) submitted B) sustained C) perceived D) undergone

单选题Do people everywhere agree on what a mountain is? The fact is that definitions vary. Everyone admits, for example, that Everest is, a mountain, the highest of them all, with an altitude of almost 30000 feet. But what about Snowdon, the loftiest peak in Wales? It rises a mere 3000 feet, yet it is also called a mountain. Comparison, a little matter of relativity, is the key. To the average person living on North America"s Great Plains, Vermont"s Green Mountains look lofty indeed, but to anyone from the Rocky Mountains, the Great Mountains seem nothing more than hills. Geographers generally agree that, to be a mountain topographically (在地形学方面), a landmass must reach, an altitude of 3000 feet above the level of the sea. Mount Everest, for instance, is 30000 feet above sea level, but only 15000 feet above the neighboring Tibetan plateau. Geologists restrict the definition even more, maintaining that a mountain is a mountain by virtue of its geological structure. Some rugged highlands are not really mountains, while some flat, low-lying rock surfaces are true mountains. They are low now because of centuries of erosion. There are even mountains under the sea, the Mid-Atlantic Ridge, for example. Like all true mountains, they were originally formed by large-scale movements of the earth"s crust.

单选题(2002)She didn't break the bad news to her mother_____that she might break down.

单选题There's no need to be frightened of the dog, he's quite ______. A. eager B. harmless C. cheerful D. weak

单选题We have only a few hours so we must ______ our time.

单选题The universe is organized in ______ with, in many cases, pretty wide gaps between them.

单选题Motorcyclists should wear helmets to ______ them from injury.

单选题Great changes ______ in the city, and a lot of buildings ______ ． A．has been taken place; have been set up B．have taken place; have been set up C．have taken place; have set up D．were taken place; were set up