[填空题]American black bears (11) in a variety of colors despite their name. In the eastern part of their range, most of these brown, red, or even yellow coats. To the north, the black bear is actually gray or white (12) . Even in the same litter, both brown and black furred bears may be born.
Black bears are the smallest of all American beam, ranging in length from five to six feet, weighing from three hundred to (13) pounds. Their (14) are small and their eyesight and hearing are not as good as their sense of smell. (15) all bears, the black bear is timid, clumsy, and rarely dangerous. But if attacked, most can climb trees and cover ground at great speeds. When angry or frightened, it is a formidable enemy.

[填空题]American black bears (11) in a variety of colors despite their name. In the eastern part of their range, most of these brown, red, or even yellow coats. To the north, the black bear is actually gray or white (12) . Even in the same litter, both brown and black furred bears may be born.
Black bears are the smallest of all American beam, ranging in length from five to six feet, weighing from three hundred to (13) pounds. Their (14) are small and their eyesight and hearing are not as good as their sense of smell. (15) all bears, the black bear is timid, clumsy, and rarely dangerous. But if attacked, most can climb trees and cover ground at great speeds. When angry or frightened, it is a formidable enemy.

[填空题]

American scientists in variety of disciplines continue to struggle to start ______.

[单项选择]We come in different colors: red, black, white, yellow and brown, have a variety of political systems, social systems, religious views or none at all; we are different intellectually, have different educational systems, different socio-economic classes; psychologically we are normal, abnormal, neurotic, psychotic, we speak different languages, and have different customs and costumes.
Studying human beings biologically and physiologically leads us to very different conclusions about how alike or different we are from each other. Very different indeed, every human being on the planet, all 5.3 billion of us, has the same number of bones, of the same type, serving the same purposes; each of us has 46 chromosomes, 23 from each parent, and these chromosomes, genes and the DNA and RNA of which they are integral parts, are in every single human being; every cell, every membrane, every tissue, and every organ is the same everywhere. We all have a heart, a circulatory system, 2 lungs, a liv
A. Racial difference.
B. Civilization difference.
C. Cultural difference.
D. Biological differenc

[单项选择]
The movie Primary Colors is about a grey-haired, gravel-voiced, doughnut-loving Governor from a Southern American state who is running in a US presidential campaign. He has a colourful past that is in danger of grabbing frontpage deadlines and a no-nonsense lawyer wife, whose accent would be right at home in a prestigious Chicago law school. The similarities with president Bill Clinton and his wife Hillary seem hard to ignore.
The book Primary Colors,published under the byline "Anonymous", became best-seller when it came out not long after the 1992 American presidential election in which Clinton was elected to the White House. It appeared to be a thinly veiled account of what happened during that campaign. But Mike Nichols, the director of Primary Colors the movie, insists that there is no direct relationship between fiction and fact.
John Travolta,who plays governor Jack Stanton, agrees. He says that of course th
A. A Movie Mirrors Bill Clinton and His Wife
B. A Movie Mirrors Presidential Election
C. A Movie Mirrors Fiction
D. A Movie Mirrors Real Life

[简答题]讨论presentation colors

[填空题]Of the two colors, I’d prefer blue ______ (well).

[填空题]

A.any
B.apple
C.black
D.thank

[填空题]

A.that
B.apple
C.black
D.afternoon

[填空题]The US federal government bears the responsibility to sponsor most of the public colleges.

[填空题]black powder

[单项选择]　Black Holes 　　Most scientists agree that black holes exist but are nearly impossible to locate.A black hole in the universe is not a solid object,like a planet,but it is shaped like a sphere (球体).Astronomers(天文学家)think that at the center of a black hole there is a single point in space with infinite(无限的)density(稠密).This single point is called a singularity (奇点).If the singularity theory is correct,it means that when a massive star collapses,all the material in it disappears into the singularity.The center of a black hole would not really be a hole at all,but an infinitely dense point.Anything that crosses the black hole is pulled in by its great gravity. 　　Although black holes do exist,they are difficult to observe.These are the reasons. 　　● No light or anything else comes out of black holes.As a result,they are invisible to a telescope. 　　● In astronomical terms,black holes are truly.For example,a black hole formed by the collapse of a giant star would have an event horizon(视
A. Right
B. Wrong
C. Not mentioned