[单项选择]

The crowd stirred and whispered in awe as, on the stage, the horse slowly tapped out the beat. Everyone became tense and quiet as the number of taps neared the correct answer to the horse trainer’s question. After the final tap, the horse paused, seemed to look around and stopped. The crowd went wild!
The horse’s name was Clever Hans, the Educated Horse, and was featured in a vaudeville (杂耍) act in the early 1900s, in Europe. When asked a complicated mathematical question by his owner, Clever Hans would tap out the correct answer with his hooves. For example, if the answer was sixty-eight, Hans would tap out six with his left hoof and eight with his right hoof. Even more remarkable, the owner would leave the room after asking the question, so there could be no secret signal between owner and horse. A mere animal seemed to be accomplishing a highly technical skill of man’s!
It wasn’t until years later that the secret of the trick was reveale
A. animal intelligence
B. mathematical skills
C. Clever Hans
D. unconscious behavior

[单项选择]

The crowd stirred and whispered in awe as, on the stage, the horse slowly tapped out the beat. Everyone became tense and quiet as the number of taps neared the correct answer to the horse trainer’s question. After The final tap, the horse paused, seemed to look around and stopped. The crowd went wild !
The horse’s name was Clever Hans, the Educated Horse, and was featured in a vaudeville(杂耍) act in the early 1900s, in Europe. When asked a complicated mathematical question by his owner, Clever Hans would tap out the correct answer with his hooves. For example, if the answer was sixty- eight, Hans would tap out six with his left hoof and eight with his right hoof. Even mere remarkable, the owner would leave the room after asking the question, so there could be no secret signal between owner and horse. A mere animal seemed to be accomplishing a highly technical skill of man’s !
It wasn’t until years later that the secret of the trick was revea
A. animal intelligence
B. mathematical skills
C. Clever Hans
D. unconscious behavior

[单项选择]Come on-Everybody’s doing it. That whispered message, half invitation and half forcing, is what most of us think of when we hear the words peer pressure. It usually leads to no good-drinking, drugs and casual sex. But in her new book Join the Club, Tina Rosenberg contends that peer pressure can also be a positive force through what she calls the social cure, in which organizations and officials use the power of group dynamics to help individuals improve their lives and possibly the word.
Rosenberg, the recipient of a Pulitzer Prize, offers a host of example of the social cure in action: In South Carolina, a state-sponsored antismoking program called Rage Against the Haze sets out to make cigarettes uncool. In South Africa, an HIV-prevention initiative known as LoveLife recruits young people to promote safe sex among their peers.
The idea seems promising, and Rosenberg is a perceptive observer. Her critique of the lameness of many pubic-health campaigns is spot-on: they fail t
A. a supplement to the social cure
B. a stimulus to group dynamics
C. an obstacle to school progress
D. a cause of undesirable behaviors

[单项选择]It’s not unusual for a woman to get whispered from her grandmother that an advanced degree could hurt her in the marriage market. Despite the fact that more women than men now attend college, the idea that smart women finish last in love seems to hang on and on.
"There were so many misperceptions about education and marriage that I decided to sort out the facts," said economist Betsey Stevenson, an assistant professor at the Wharton School at the University of Pennsylvania. So along with Wharton colleague Adam Isen, Stevenson crunched national marriage data from 1950 to 2008 and found that the marriage penalty women once paid for being well educated has largely disappeared. Expectations have changed dramatically in the last half century. "In the 1950s, a lot of women thought they needed to marry right away," said Coontz, a family historian at Evergreen State College, "Real wages were rising so quickly that men in their 20s could afford to marry early. But they didn’t want a woman
A. Men are often superior to women in a marriage.
B. Women are in charge of all the housework and child care.
C. The salary of male is the major concern of women.
D. Couples do not get married only for financial security.