What happened in the 1960s and 1970s（）.
A: Food production increased in India.
B: Fertilizer began to be used in England.
C: Hybridized plants were grown in the US.
D: Land expansion occurred in Mexico.
A: Food production increased in India.
B: Fertilizer began to be used in England.
C: Hybridized plants were grown in the US.
D: Land expansion occurred in Mexico.
举一反三
- What happened to Darwin's letter in the 1970s?
- The story happened ______. A: in 1960's B: in his 60's C: in 60's D: in the 1960's
- ,The term“British Disease”is often used to characterize Britain's economic decline during 1950s and _____. A: 1970s B: 1960s C: 1980s D: 2010s
- The world's first electronic computer was born in ____. A: 1940s B: 1950s C: 1960s D: 1970s
- ( ) is the world's largest corn producer. A: China B: America C: India D: Mexico