（2015•连云港）Like humans，not every dog can donate blood．The dogs are screened（检查）for health first．Dogs must have the correct blood type，weigh at least 55pounds and be younger than 8years old． They may donate three or four pints（品脱）a year，which can help animals that are suffering from illnesses like cancer or an accident like being hit by a car．One pint can save up to three dogs Owners volunteer their pets for the short procedure（程序），
which requires no sedation，a kind of medicine given to calm him or her down．It's the dog that finally chooses to lie still and give．If the dogs want to get up and leave，they can．
Sandy Luc as brought her 7-year-old black German shepherd，Raina，to the bloodmobile
（流动血站）when it was parked at her small village．Sandy said she wouldn't have troubled
herself with highway traffic and city parking problems to take the dog to Penn Vet's animal
hospital in downtown Philadelphia，which is twice as far from her home．But the bloodmobile
made it easy to find out if Raina could donate．“I was very，very excited that she had the right blood that was needed to help another dog out，“she said．“We'll do it again．“
38．What should we know about a dog before it donates blood？
①Health condition ②Blood type ③Pint number
④Donating time ⑤Weight⑥Age
A．①②③④
B．②③④⑤
C．③④⑤⑥
D．①②⑤⑥
39．As a blood donator，one healthy dog can save at least
other dogs a year．
A．three
B．four
C．nine
D．twelve
40．What should be done to find out if a dog could donate？
A．Patients should be called in to calm the donor down．
B，Doctors should give sedation to a donor to the bloodmobile
C．A volunteer owner brings his or her donor to the bloodmobile
D．A skilled driver sends the owner and the donor to Penn Vet's animal hospital．
41．Which of the following can be the best title of the passage？
A．Dogs Donate Blood too
B．Dogs Help Each Other too
C．Raina一A Donor Hero
D．Sandy-A Volunteer Owner．