1. _____________________________(多亏了一系列的新发明)，doctors can treat this disease successfully.
2. In my sixties, one change I notice is that ______________________(我比以前更容易累了).
3. I am going to pursue this course, _____________________________________ (无论我要做出什么样的牺牲).
4. I would prefer shopping online to shopping in a department store because _________________(它更加方便和省时).
5. Many Americans live on credit, and their quality of life _____________________(是用他们能够借到多少来衡量 的), not how much they can earn.
参考答案：
1. Thanks to /Due to series of new inventions
解析：知识点是词组“多亏，由于”Thanks to /Due to。
2. I feel/get tired more easily than before
解析：知识点是比较级more … than.
3. no matter what sacrifice I am going to make/ whatever sacrifice I will make/ no matter how much I would sacrifice
解析：知识点是状语从句。
4. it/ the former is more convenient and timesaving
解析：知识点是比较级more, 词汇。
5. is measured by how much they can borrow
解析：知识点是被动语态、宾语从句。