A: it becomes restless, nervous and violent
B: its bite is fatal
C: the potential danger of the sick animal may be ignored
D: it will attack people at any time
举一反三
- The tiger, a once ____ animal to humans, is now ____ of disappearing on the earth. A: dangerous, danger B: dangerous, in danger C: in danger, in danger D: danger, in danger
- Which of the following is the most important element of Koch’s germ theory of disease? The animal shows disease symptoms when ( ) A: the animal has been in contact with a sick animal. B: the animal has a lowered resistance. C: a microorganism is observed in the animal. D: a microorganism is inoculated into the animal.
- Most of the students think a lion is much ____(dangerous) than a bear andit is the ____ (dangerous) animal in the world.
- Quarantine as a noun may refer to a period of time when an animal or a person that has or may have a disease is kept away from others in order to prevent the disease from spreading. A: 正确 B: 错误
- 中国大学MOOC: Quarantine as a noun may refer to a period of time when an animal or a person that has or may have a disease is kept away from others in order to prevent the disease from spreading.
内容
- 0
The muscles of a fossilized animal can sometimes be reconstructed because______. A: they were preserved with the rest of the animal B: they were lodged inside the animal's skull C: they were hardened parts of the animal's body D: they were attached to the animal's skeleton
- 1
Directed research may become a danger to the future of science because______. A: pure research may be neglected under this system B: the division between the pure and the applied scientist will disappear C: the interdependence of pure and applied science may be ignored D: both A and C
- 2
Why did the Kiowa people choose the bear in their legend? A: Because bears are the most powerful animal in Kiowa culture. B: Because bears are very fierce, which represnted the hard condition they had to suffer.
- 3
Why is heart disease the most dangerous killer in the United States A: Because American people drink too much spirits. B: Because there are a great number of fat people there. C: The author doesn't give a definite answer. D: Because American people eat too much fatty fish.
- 4
Online dating may be dangerous because people may give false information in the virtual world.