8．Have you ever heard of"latchkey kids"？Latchkey kids are children who return home from school and find themselves alone because their parents are away at work．To help these parents make sure of the safety of their children，Database Systems Corp．（DSC） has started a special calling program．
The special calling program is called CARE．The CARE phone system calls children alone at home to make sure they are good and safe．It calls the children at the times that their parents have set．After the children answer the phone and say"Hello"，they will hear"Hi!This is your daily checkup call!If everything is okay，please press 1．If you need help，please press 3．"If the children don't answer the phone three times or they press 3，the workers of CARE will call their parents．
Do you want your children to take part in CARE？If you do，please call us．Our office hours are from 8：00am t0 5：00pm We will provide you with all the information you want．Our phone number is 602-5986．To know the cost，please look at the following table．
| 1month | 19.95 |
| 3month | 17.95per month |
| 6month | 16.95per month |
| 9month | 15.95per month |
| 12month | 14.95per month |
根據(jù)材料內(nèi)容選擇最佳答案，并將其標(biāo)號(hào)填人題前括號(hào)內(nèi)．
51．What's the special calling program for？C
A．Asking teachers about children's information at school．
B．Helping parents take care of their children at home．
C．Helping parents make sure their children are safe at home．
D．Finding children alone at home and playing with them．
52．When does the CARE phone system call children？B
A．At any time
B．At the times their parents have set．
C．At weekends．
D．Only when they return home from school．
53．What's the Chinese meaning of the underlined word"checkup"？D
A．叫醒
B．拜訪
C．詢問
D．檢查
54．How much should Mr．Smith pay if he wants his son to take part in CARE for three months？D
A.44.85．
B.47.85．
C.59.85．
D.53.85．
55．What does it mean if a child answers the CAREphone and presses l？A
A．It means everything is OK．
B．It means the child needs help．
C．It means the child is not good or safe．
D．It means the workers of CARE will call the parents．
