发生膝骨性关节炎的危险因素不包括（） A.年龄在55岁以上 B.肥胖 C.家庭病史

Six mornings a week, Rajendra Prasad gets on his bicycle and starts work. He puts on his postman’s uniform(制服), and takes  小题1:  to the desert villages of Rajasthan. He wears a turban on his head because the desert sun is very hot. When he gets to a village, he rings the bell(按铃) on his bike and everybody小题2: out. They don’t get many visitors 小题3: they’re excited. Today, Rajendra’s first stop is Geeta’s house. She’s got a postcard _小题4:_ her cousin in Bangalore. Rajendra has to read it because Ceeta can’t read. The news is good, so she’s happy.

Rajendra doesn’t  小题5: take the mail. He also takes the pension(退休金) money for the old people. Today Sua gets her pension. She can’t  小题6:  her name, so she has to give her fingerprint(指纹) intead. Rajendra has to 小题7: because she’s old. “I don’t know how 小题8: I am,” says Sua. “Maybe 50 or 60?” Her friends think she’s ahout 75.
Rajendra also takes a telephone becauae many of the villages don’t have phones. Today, Samundar wants to make a call. She 小题9:  Rajendra the phone number and he dials(拨电话号码) for her. She speaks to her son Vishnu. “I told him to come home hecause I need some money,” she says.
At the end of the day, Rajendra does the paper work and thinks about his  小题10:. “Sometimes it’s difficult, but it’s a good job,” he says.

小题11:

A．work B．mail C．food D．call

小题12:

A．works B．takes C．runs D．stands

小题13:

A．but B．so C．because D．or

小题14:

A．with B．for C．from D．as

小题15:

A．even B．also C．often D．only

小题16:

A．write B．read C．say D．hear

小题17:

A．help B．know C．make D．put

小题18:

A．clever B．kind C．tall D．old

小题19:

A．buys B．gives C．catches D．sends

小题20:

A．travel B．study C．job D．life