[填空题]The Mayas are believed as the first people to figure out______.

[填空题]The Mayas are believed as the first people to figure out______.

[填空题]Alan Freed is widely believed to be the first person to use the term "rock and roll".

[单项选择]E It’s generally believed that people act the way they do because of their personalities and attitudes. They recycle their garbage because they care about the environment. They pay $5 for a caramel brulee latte because they like expensive coffee drinks. It’s undeniable that behavior comes from our inner dispositions（性情）, but in many instances we also draw inferences about who we are, as suggested by the social psychologist Daryl Bern, by observing our own behavior. We can be strangers to ourselves. If we knew our own minds, why should we need to guess what our preferences are from our behavior If our minds were an open book, we would know exactly how much we care about the environment or like lattes. Actually, we often need to look to our behavior to figure out who we are. Moreover, we don’t just use our behavior to learn about our particular types of character --- we infer characters that weren’t there before. Our behavior is often shaped by little pressures around us,
A. determine one’s behavior
B. reflect one’s taste
C. influence one’s surroundings
D. result from one’s habits

[填空题]The skyscraper is believed by some people to be a product of an era when technology was relatively weak and people had to stay together to do their jobs.

[单项选择]Since prehistoric people first applied natural pigments to cave walls, _________ have painted to express themselves.
A. when artists
B. artists
C. artists who
D. that artists

[单项选择]People once widely believed that intelligent life existed on Mars. The 19th-century discovery of what appeared to be geometric designs cut across the surface was taken as evidence. The lines were thought to have been a system of canals that had been built to irrigate the surface. It is now clear that the "canals"—perhaps the most spectacular geologic features of Mars—are natural valleys where ancient rivers once flowed. Another fragmented idea concerns the planet’’s seasonal changes in color. Once attributed to the rapid spread of some life-form, these shifts are now known to develop from the movement of fine dust in the atmosphere. By the close of the 20th century none of the many experiments conducted by spacecraft had ever found persuasive evidence of life. Nevertheless, speculation continued over the existence of some form of life, in either the present or past. In 1996 scientists discovered organic compounds and minerals in a meteorite (陨石), consisting of Martian rock, t
A. the minor geologic characteristics of Mars
B. natural valleys on the surface of Mars
C. rivers that have kept flowing since ancient times
D. a system that irrigates the whole surface