Reading or writing messages while you are walking is dangerous. A new study says it is more dangerous than texting while driving. The study is from the University of Buffalo (布法罗) in the USA. Their report says walking is not as easy as we think it is. We need to focus on many things at the same time to walk safely in a straight line. The research team said that people forget how to walk properly, so dangerous things happen to them. They bump into walls and other people, walk into cars, fall over things in the street, and even fall into holes or down stairs. 

A University of Buffalo professor said walking is a complex action. He said there are several reasons why texting stops people from walking properly. One reason is that they cannot see the road ahead of them. Another is that they are focused on their fingers on their mobile phones instead of their feet on the street. A final reason is that their minds are somewhere else and not on thinking about walking from A to B safely. The professor said over 6,000 people visited his hospital last year because they were injured while texting. He said the worst cases are head injuries. When a pedestrian is thrown into the air after being hit by a car, he/she has nothing to protect the head, and the damage can be serious.

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1.Texting while walking is more dangerous than texting _______.

A while running

B while laughing

C while driving

D while studying

解析：选C。C 细节理解题。根据第1段第2句A new study says it is more dangerous than texting while driving.可知，故选C。

2.Walking is_______.

A a good action

B an easy action

C a waste of time

D a complex action

解析：选D。D 细节理解题。根据第2段第1句A University of Buffalo professor said walking is a complex action.可知，故选D。

3.Which of the following is WRONG?

A The study is from the University of Buffalo in the USA.

B Dangerous things happen because people forget how to walk properly.

C Walking is not as easy as we think it is.

D Walking is more dangerous than driving.

解析：选D。D 内容理解题。根据第1段内容可知走路发短信有时候比开车发短信更危险，所以D项表达错误，故选D。

4.What does the underlined word “pedestrian” mean?

A 斑马线

B 行人

C 缺乏想象力的

D 火车

解析：选B。B 语义猜测题。根据文章主旨及被车撞飞可猜测该词义为“行人”，故选B。

5.Which is the safest to write a message?

A Texting at home.

B Texting while driving.

C Texting while walking.

D Texting while running.

解析：选A。A 判断推理题。根据文章主旨可知开车、走路、奔跑等发短信都是危险的行为，故选A。