(C) It looks like a mobile phone（手机）, but the service is much cheaper. It acts like a mobi

(C)
It looks like a mobile phone（手机）, but the service is much cheaper. It acts like a mobile phone, but only in your own city. Beyond the city walls, it’s useless.
“Little Smart”, also called “xiaolingtong”, has always been pared to mobile phones. But actually, it is more like one of those cordless phones(无绳电话) used around the home. The only difference is that this one reaches much further than from the bathroom to the living room. It can travel across an entire city.
Cheap costs are the main reason for the success of Little Smart. It costs 25 yuan a month for the line and about 0.1 yuan per minute to use. A mobile phone, on the other hand, can cost four or five times as much. What’s more, unlike mobile phones, there’s no fee(费) for ining calls. So these low charges have attracted many users.
But, Little Smart is not really that smart. Users often plain about its bad voice quality. And there are not as many stations to pick up its signals（信号）as there are for mobiles. “I couldn’t receive a phone call if I was on a bus,” said Li Ping, a user in Hangzhou. “It worked fine when I stood still, but there were breaks in signal when I was moving.”
Scientists are trying to make Little Smart more user friendly. Messaging and Internet access(接入) have been added to the service. And the latest Little Smart handset even has color screen.
31. Why is Little Smart popular in China?     
A. It looks like a mobile phone.        B. The service is much cheaper.
C. There is no fee for ining calls.   D. All of the above.
32. How is the charge of Little Smart?     
A. About 10 fen per minute to use.    
B. It costs four or five times more than a mobile phone.
C. It only costs 25 yuan each month.  
D. There’s no fee for calls.
33. Why are users not satisfied with Little Smart?     
A. They can’t hear each other clearly out of the city.
B. There are so few stations for Little Smart to pick up its signals.
C.    When you use it, you must stand up.      
D. The charges are low.
34. The underlined word “handset” in the last paragraph means “    ”.
A. the hand bag      B. telephone      C. service        D. mobile phone
35. What can we infer from the passage?     .
A. It’s wrong to say that Little Smart is smart.  
B. Scientist are trying to make Little Smart smaller.
C. Little Smart will be better than today.   
D. People will change Little Smart into a mobile phone.D