One of the greatest ________ of the later 20th century was a huge increase in life expectancy.
举一反三
- Many people look upon Albert Einstein as one of the 20th century’s greatest geniuses. <br/>______
- One of the best ______ of the 20th century is the mobile phone.
- With the_______ of living conditions throughout the world, there has been an increase in the life expectancy of the human race.
- 21.In the 20th century, people believed that life in the future ________ easier. A: was B: had been C: will be D: would be
- （Multiple Choice）Which period of life does choice have the greatest impact?（ ） A: earlier period of life B: middle period of life C: later in life D: end of life