阅读判断（第1～7题，每题1分，共7分）
下面的短文后列出了7个句子，请根据短文的内容对每个句子做出判断：如果该句提供的是正确信息，请选择A；如果该句提供的是错误信息，请选择B；如果该句的信息文中没有提及，请选择C。
Spare a Kidney？
It is no longer unusual for a spouse or relative to donate a kidney to a loved one, but the number of Americans who have given a kidney to a friend, a co-worker or even a complete stranger has risen sharply from 68 in 1994 to 176 in 1998.
There are many reasons: First, it's possible to live a normal life with only one kidney, （The remaining kidney enlarges to make up most of the difference.）In addition a kidney from a live donor lasts longer than a kidney taken from someone who has died suddenly. But the biggest change in the past few years is that transplant surgeons have started using laparoscopic techniques to remove the donor kidney through a much smaller incision, arid this can cut recovery time for the donor from six weeks to four weeks. Just because you can do something, however, it doesn't mean you should. Donating a kidney means undergoing an operation that carries some risk. You could argue that you may be helping to save a life, but you certainly can't pretend that you're better off with one kidney instead of two. So, what are the risks? "As with any major operation, there is a chance of dying, of reoperation due to bleeding, of infection, of vein clots in the legs or a hernia at the incision," says Dr. Arthur Matas, director of the renal-transplant program at the University of Minnesota Medical Center in Minneapolis. Even laparoscopy, a relatively new technique for kidney donation, is not risk-free. Doctors estimate that chances of dying from the procedure are about 3 in 10，000.
There’s no money to be made; selling an organ is illegal. But the recipient's insurance normally covers your operation and immediate after care. Your costs can include hotel bills, lost pay during recovery or possible future disability.
Although transplant centers must evaluate any potential donor's suitability, it never hurts to have an independent opinion. The most common contraindications are heart disease, diabetes and high blood pressure. Never let anyone, not even a close relative, pressure you into giving up an organ - no matter if you're healthy. "There's often the feeling that you're not a good friend, father, mother if you don't do this" says Arthur Caplan, director of the University of Pennsylvania's Cent for Bioethics. Some transplant centers will invent a "medical problem" on behalf of those who are reluctant to donate but feel they can't say no.
16 From 1994 to 1998 the number of Americans who had donated a kidney reached 244.
A Right B Wrong C Not Mentioned
17 One of the reasons why the number of kidney donors has risen is that one is better off with one kidney instead of two.
A Right B Wrong C Not Mentioned
18 You don't have to be dead to donate a kidney, but you had better know the risks before you give it up.
A Right B Wrong C Not Mentioned
19 None of the Americans who donated a kidney during the period lasting from 1994 to 1998 died from the procedure.
A Right B Wrong C Not Mentioned
20 No one sells organs in the U.S. since it is illegal.
A Right B Wrong C Not Mentioned
21 People with heart disease, diabetes and high blood pressure are not suitable for kidney donation.
A Right B Wrong C Not Mentioned
22 Some transplant centers invent "medical problems" to cheat potential kidney donors.
A Right B Wrong C Not Mentioned
