Which of the following is INCORRECT about passenger pigeons
A: Their number was once incredible.
B: This kind of bird is big and heavy.
C: Large number of them was killed mainly for meat.
D: They were sold in big cities.
A: Their number was once incredible.
B: This kind of bird is big and heavy.
C: Large number of them was killed mainly for meat.
D: They were sold in big cities.
举一反三
- The buffalo were killed mainly A: for their meat. B: because of their large number. C: for ecological balance. D: for fun.
- A kiwi bird is ______. A: as heavy as four hens together B: as big as a hen C: as big as an egg
- Which of the following descriptions of gray numbers is correct? A: A grey number is a kind of uncertain number which exact value and the range are unknown. B: A grey number is a kind of uncertain number which exact value is unknown but the range of the number is known. C: The value range of the gray number can only be an interval. D: Black and white numbers are not gray numbers.
- The number of people invited _______fifty, but a number of them _______absent. A: were ... was B: was ... was C: was ... were D: were .. were
- 中国大学MOOC: Which of the following cities were not once the ancient capitals?