The spread of New World crops like corn and the potato, along with the discovery of chemical fertilizers, helped ________ starvation in Europe. （ ）
A: advocate
B: banish
C: distinguish
D: initiate
A: advocate
B: banish
C: distinguish
D: initiate
举一反三
- Corn originated in the New World and thus was not known in Europe until Columbus found it ______ in Cuba.
- ________ helped to spread the plague in Dark Ages in Europe. A: Cats B: Dogs C: Rats and Fleas D: Birds
- Among the following crops, the group that is all self-pollinated crops is (). A: Cotton, rice, rape B: Wheat, corn, broad beans C: Sweet potato, cotton, rape D: Rice, wheat, barley
- The oil shortage ________ the prices of chemical fertilizers on the world market. A: A drove oil B: B drove up C: C drove in D: D drove off
- What were the Polynesian settlers' diet when they arrived in New Zealand? A: fish B: sweet potato C: corn D: birds