Section BDirections: There are 2 passages in this section. Each passage is followed by som

Section B

Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice.

That particularly humorless boss or dour neighbor may not have a personality defect---but a different brain structure, research published Wednesday suggests. Scientists in Canada say they have found how brain damage can affect a person's sense of humor, adding to evidence that humor may be hard-wired into the brain.

A team at the University of Toronto and the Baycrest Center for Geriatric Care in Toronto found that people with damage to the right frontal lobe of their brains do not really "get" ironic jokes the way they should. Instead, they prefer slapstick humor. "We always thought of humor as an intangible part of our personality," Prathiba Shammi of the University of Toronto, a psychologist who worked on the study, said in a statement. "Now we know humor can be tested and scientifically scrutinized.”

Shammi compared the responses of 42 volunteers aged 18 to 70 to written and verbal jokes and cartoons. Half the group had a brain injury caused by stroke, tumor or surgical removal. People with damage to the right anterior frontal lobe were the least able to appreciate jokes and cartoons, Shammi reported in the journal Brain. Instead, they showed a preference for silly slapstick humor. Shammi gave an example of one of her jokes and the responses.

A teen-ager is being interviewed for a summer job. "You'll get $ 50 a week to start off," says his boss. "Then after a month you'll get a raise to $75 a week. "Volunteers were offered three possible punch lines:

a. "I'd like to take the job. When can I start？"

b. "That's great! I'll come back in a month."

c. "Hey boss, your nose is too big for your face!"

According to the passage a humorless person ______.

A．has a personality defect

B．may have a different brain structure

C．has been injured in the brain

D．does not understand any joke