According to the passage, chimpanzees can't build power stations because______.
A: they don't have a larynx which helps to pronounce sounds
B: they cannot cooperate with each other
C: they don't have a communication system
D: they don't have speech like the humans
A: they don't have a larynx which helps to pronounce sounds
B: they cannot cooperate with each other
C: they don't have a communication system
D: they don't have speech like the humans
举一反三
- If you don’t want to, you ______ to get there with us. A: mustn’t B: can’t C: don’t have D: have not
- What’s their problem with the holiday A: They don’t agree on where to go. B: They don’t have enough time. C: They can’t afford the holiday. D: They don’t have a car.
- If you don't have time to prepare,which kind of speech is it:_____.
- Most people can't read and comprehend quickly mainly because ________. A: they don't read groups of words B: they don't like to be trained in reading skills C: they don't realize they have poor reading habits D: they don't understand words when put together
- You __________ help me if you don't have time. I can do the job myself. A: aren't able to B: don't have to C: mustn't