The letters referred to in the first paragraph must have ______.
A: complained that carbon monoxide had affected their own ability to think
B: complained that carbon monoxide had affected other people's ability think
C: opposed the limiting of the use of cars
D: proposed the limiting of the use of cars
A: complained that carbon monoxide had affected their own ability to think
B: complained that carbon monoxide had affected other people's ability think
C: opposed the limiting of the use of cars
D: proposed the limiting of the use of cars
举一反三
- Which is not the feature of life? A: They have the ability to propagation. B: They have the active ability to change themself to adapt to the environment. C: They are mainly made up of carbon, hydrogen, oxygen, nitrogen, etc. D: They must have the ability to make and use tools
- Carbon monoxide is dangerous because
- The synonym of CO2 is .（ ）。 A: hydrogen B: carbon monoxide C: carbon dioxide D: oxygen
- A common symptom of carbon monoxide poisoning is （ ）
- Hypoxia susceptibility due to inhalation of carbon monoxide increases as（ ）