The scientists wanted to keep people ________ about the breakthrough in their experiment.

What else do scientists find about teenagers?

2. Scientists believe dreams are about your past and future.

This passage is about famous （） A: scientists B: personalities C: composers D: leaders

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

For years scientists have been worried about ________of air pollution on th eearth’s natural conditions.

The students are talking about Chinese surprising developments in . A: science B: scientist C: scientific D: scientists

Scientists were warning the world about global warming 60 years ago. If people had acted qu

Scientists are concerned about why natural phenomena of which some often impress heavy calamities on man occur.

Scientists are responsible for people who hold harmful beliefs about human nature because. A: the theories of scientists are used as justification for such harmful beliefs B: only through science can these people be refuted C: they have an obligation to correct their mistakes D: scientists are the ones who know the true nature of humankind