题目内容：

    Worries about the extra time needed to walk or bike to work are a big reason people get into their cars, but those worries may be unfounded.

In a new study, researchers asked 253 staff and 252 students at Penn State how often they drove, took the bus, walked, or biked to school. Participants also answered questions about how long they thought it would take them to walk or bike from their home to school. Google Maps calculated actual travel times.

According to the findings, about 91 percent of staff incorrectly estimated (估计) how long it would take to walk to school, and about 93 percent overestimated how long it would lake to bike.

Students were a little better at estimating travel times－about 55 percent incorrectly estimated walking times and about 43 percent misestimated biking times. Almost everyone who was not accurate overestimated the travel time.

The findings clarify the barriers that keep people from walking or biking, sometimes referred to as“active travel,” says Melissa Bopp, a professor at Penn State. He pointed out the key to getting people to travel more actively is to learn more about people’ s knowledge, altitudes, and beliefs.“I can’ t change your age, but I can change your knowledge,”Bopp says.

Several characteristics could predict if someone was more likely to estimate travel time incorrectly. Staff who thought parking was more available and accessible were more discordant （不一致的), and women were more likely to be more discordant than men.

On the contrary, people who rode a bike or walked more often were more likely to accurately predict travel times.

While the study looked at people predicting travel time when they shared a common destination, the results have broader meanings.

1.Which of the following can best replace the underlined word “unfounded” in Paragraph 1?

A.unnecessary. B.normal.

C.disturbing. D.beneficial.

2.What conclusion can we draw from the findings?

A.School staff lack common sense.

B.Everyone overestimated the traveling time by bike.

C.School students estimated more accurately in the study.

D.Students have higher intelligence than school staff.

3.What matters in getting people involved in “active travel”?

A.Weight. B.Status.

C.Age. D.Knowledge.

4.What can be the best title for the text?

A.Walking or biking is beneficial to you.

B.Walking or biking is quicker than you’ d think.

C.Walking or biking is becoming more popular.

D.People walking or biking can predict accurately.