34. According to paragraph 3, what medical improvement can benefit elderly people?
(A) to make older people’s bodies less complex
(B) to duplicate different organ systems and parts for older people
(C) to allow them to drink alcohol and eat junk food without damaging their bodies
(D) to replace their old joint with a new one made of plastic or metal

Like machines, different body parts sometimes wear down from old age. People over the age of 65 are more likely to fall and hurt themselves, and these injuries—from bad cuts to broken bone—usually require serious medical attention. There are many treatments available to help older people recover from illness and injury. It is now common for older people with damaged joints, for example, to have surgery to replace the old joint with a new one made of plastic or metal. Instead of suffering aches and pains through their retirement days, older people are able to lead happier and more comfortable lives.

像機器一樣，不同的身體部位有時會因年老而磨損。 65 歲以上的人更容易摔倒和受傷，而這些傷害——從嚴重的割傷到骨折——通常需要認真的醫療護理。 有許多治療方法可以幫助老年人從疾病和受傷中恢復過來。 對於關節受損的老年人來說，現在很常見，例如，用塑料或金屬製成的新關節替換舊關節。 老年人不再在退休時遭受痛苦和痛苦，而是能夠過上更快樂、更舒適的生活。


根據第 3 段，哪些醫療改進可以使老年人受益？
(A) 使老年人的身體不那麼複雜
(B) 為老年人復制不同的器官系統和部位
(C) 允許他們喝酒和吃垃圾食品而不損害他們的身體
(D) 用關節置換他們的舊關節 新的由塑料或金屬製成的