________ the calculation is right， scientists can never be sure that they have included all variables and modeled them accurately.
举一反三
- 她从来没有为他们做过任何事，而他们为她做了所有能做的事情。 A: She has never done anything for them, whereas they have done everything they can for her. B: She has never done anything for them, on the other hand, they have done everything they can for her. C: She has never done anything for them, when they have done everything they can for her. D: She has never done anything for them, as they have done everything they can for her.
- Deserts ______. A: get very little rain B: never have any plants or animals in them C: can all be turned into good land before long D: both A and C
- From the passage we know that the author ______. A: thinks that scientists are about to achieve artificial intelligence B: doubts whether scientists can ever achieve artificial intelligence C: does not think that scientists have found real artificial intelligence D: is sure that scientists have achieved artificial intelligence
- (2) Strengths can be good or bad, so you have to build them with all efforts.
- Can I help you with the luggage, Sir? A: Yes, please B: Never Mind C: You are right D: Not at all