Removing seeds from cotton plants was a slow job until Eli Whitney invented the cotton gin. What is a cotton gin?
A: a drink
B: a book
C: a machine
D: a cloth
A: a drink
B: a book
C: a machine
D: a cloth
举一反三
- Which of the following call be inferred from the passage about cotton production in the United States after the introduction of Whitney's cotton gin（） A: More cotton came from sea island cotton plants than befor B: More cotton came from short-staple cotton plants than befor C: Most cotton produced was sold domesticall D: Most cotton produced was exported to Englan
- Which is cheaper, cotton cloth or gunny cloth? ____________
- What are the three major cash crops in Southern colonies? A: cotton, rice, tobacco B: tobacco, rice, indigo C: tobacco, cotton, indigo D: cotton, wheat, rice
- Which of the following is NOT the difference between Bt cotton and common cotton A: Bt cotton is stronger than common cotton. B: Bt cotton yields more than common cotton. C: Bt cotton needs less pesticides than common cotton. D: Bt cotton is harm to cotton bollworms.
- The first step of producing hand-made cotton cloth is to twine and spin the cotton.