In the next 40 years, the percentage of people in the United States over the age of 65 is expected to double. (1) the needs of this part of the populations will be a (2) to the ingenuity (足智多谋) of America. To a (3) degree, a society is judged by (4) it cares for those who can no longercare (5) themselves.
High technology (6) the most startling advances in helping the elderly. In (7) to the well-known artificial heart implantation (移植), there are efforts underway to (8) artificial lungs, livers, and bones. An electric ear is (9) sy-five percent effective. The implants will (10) better medical care by (11) minute doses of drugs into the body continuously.
For the older people, even the st tasks can be difficult, (12) impossible to perform. American business have responded (13) their needs with a (14) of inexpensive but useful (15) Companies have designed extra-efficient can-openers that (16) people whose hands have become weak to open cans easily. There are (17) that allow people to pull on a pair of socks (18) straining their backs. Combs with long handles and U-shaped back brushes are (19) for those who cannot reach as (20) as they could when they were young.