Questão 761004

Read the text and answer questions 46, 47 and 48.

Can you be too old to donate blood?

1 In general, you can never be too old to donate blood.

Though you can be too young or too thin.

The American Association of Blood Banks used to bar

people over 65 from donating blood, but it scrapped the rule

5 in 1978 after studies found that older people _____ stored

their own blood prior to surgery did well, said Dr. Steven

Kleinman, the association’s senior medical adviser. Now

most blood banks are happy to accept blood from older

volunteers.

Adapted from: http://well.blogs.nytimes.com

The verb “bar” (line 3), in the text above, is closest in meaning to: