Liu Xu was robbed（抢劫）!The 13-year-old was riding home when a man jumped out from the road-side．He pulled Liu off his bike and rode away．Liu was scared，but he didn’t run after the robber．He found a telephone and called the police at 110．
“Safety is the first in such a situation，”Liu said，remembering what his teacher had told him in his aid class．“It’s not safe to run after an adult who is much stronger than you．”
Liu is a student at Shenzhen Bao’an Middle School in Guangdong．His school is one of the first in China to have required first aid education．Grade 1students must take the class once a week．
Teenage safety has become a serious problem recently．According to a recent survey，about 16，000teenagers die in accidents in China every year．An average（平均） of 40students die every day from drowning（溺水），food poisoning（中毒） and traffic accidents．
Bao’an School said that the first aid classes are to“teach students skills so that they can keep themselves safe and save themselves from danger．”
Students at Bao’an often learn by role（角色）-playing in first aid classes．
Zhou Min，12，remembered her favorite lesson．“I performed as a stranger knocking at a door．A classmate stood inside the door and asked several questions before letting me in．Then we changed roles and did it again，”Zhou said．“We learned a lot while having fun at role-playing．”
The topics of the class are regularly changed．The students have learned skills for lifesaving in earthquakes．They also deal with topics like sexual harassment（骚扰）．
“The teacher told us girls that we should try not to go out alone，especially at night．If someone tries to do bad things to us，we may hit their eyes or noses or kick their deadly parts．Then we should quickly run into a crowded place，”said Zhong Hua，a 13-year-old girl．
76．From the first paragraph of the passage，we know
．
A．the robber was of medium height
B．Liu Xu was robbed on his way home
C．the robber ran away when he saw the policeman
D．Liu Xu jumped off his bike and called the police at once
77．Why didn't Liu Xu run after the robber when his bike was taken away from him？
A．Because the robber rode away too fast
B．Because he was too scared to run in such a situation．
C．Because the robber looked much stronger than an adult．
D．Because he remembered what he had learned in his first aid class．
78．The purpose of the first aid classes is to
．
A．make Grade 1students take the class once a week
B．help the 40students to solve their safety problems
C．complete the required art education in the middle school
D．teach the teenagers how to keep themselves safe from danger
79．Zhou Min gives an example to show
．
A．how they learn in the first aid classes
B．where they have their first aid classes
C．what they don't often do in her classes
D．who taught them role-playing in her classes
80．Which of the following is NOT true according to the passage？
A．A survey shows that over ten thousand teenagers die in accidents in China every year．
B．Many students of Bao’an Middle School enjoyed themselves in first aid classes．
C．Girl students are taught what to do when someone tries to do bad things to them．
D．Topics for first aid classes are quite different from what the students have taught．