Are we getting more stupid? According to Gerald Crabtree, a scientist at Stanford Universi

Are we getting more stupid? According to Gerald Crabtree, a scientist at Stanford University in the US, we are.
You may not want to hear this, but Crabtree believes that human intelligence reached its peak more than 2,000 years ago and ever since then has been going downhill. “If an average Greek from 1,000 BC were transported to modern times, he or she would be one of the brightest among us,” Crabtree told The Guardian.
At the heart of Crabtree’s thinking is a simple idea. In the past, intelligence was critical for survival when our ancestors had to avoid dangerous animals and hunt for food. The difference of being smart or stupid is often life or death. However, after the spread of agriculture, when our ancestors began to live in dense farming communities, the need to keep their intelligence in peak condition gradually reduced.
This is not hard to understand. Most of the time, pressure is what keeps us going – you need the pressure from your teachers to finish your homework; the pressure of looking pretty prompts(促使) you to lose weight when summer comes. And the same is also true of our intelligence – if we think less, we become less smart.
These mutations(变异) are harmful to our intelligence and they were all developed in the past 3,000 years. The other evidence that Crabtree holds is in our genes. He found that among the 2,000 to 5,000 genes that we have that determine human intelligence , there are two or more mutations in each of us.
However, Crabtree’s theory has been criticized by some who say that early humans may have better hunting and surviving abilities, but people today have developed a more diverse intelligence. For example, spearing a tiger doesn’t necessarily require more brainpower than playing chess or writing a poem. Moreover, the power of modern education means a lot more people have the opportunity to learn nowadays.
“You wouldn’t get Stephen Hawking 2,000 years ago. He just wouldn’t exist,” Thomas Hills of the University of Warwick, UK, told Live Science. “But now we have people of his intellectual capacity doing things and making insights(洞察力) that we would never have achieved in our environment of evolutionary adaptation.”
【小题1】What is Crabtree’s recent finding according to the article? A．The Greeks from 1,000 BC could have been the smartest in human history.B．Our ancient ancestors had no better surviving abilities than we do nowadays.C．Humans have been getting steadily more intelligent since the invention of farming.D．Mutations in genes that decide human intelligence have affected the development of intelligence.【小题2】According to Crabtree, ancient humans .A．had much more genes that determine human intelligenceB．were forced to be smart due to natural selection pressuresC．relied more on group intelligence than individual intelligenceD．developed a diverse intelligence to adapt to the hard realities【小题3】Some argue that Crabtree’s theory is false because they think .A．people today are under much more pressure than early humansB．it’s ridiculous to compare a hunter’s and a poet’s intelligenceC．modern education is far more advanced than ancient educationD．human intelligence nowadays is different from that of the distant past【小题4】What is Thomas Hills’ attitude toward Crabtree’s theory?A．SupportiveB．UnfavorableC．WorriedD．ConfusedD

(答案→)D 解析：文章介绍了Crabtree最近的研究发现，现在的人类没有以前聪明了，因为决定人们基因的变异影响了智力的发展。但是这个观点引起了争论。【小题1】推理题：从第五段的句子：These mutations(变异) are harmful to our intelligence and they were all developed in the past 3,000 years. The other evidence that Crabtree holds is in our genes. He found that among the 2,000 to 5,000 genes that we have that determine human intelligence , there are two or more mutations in each of us.可知 Crabtree最近的研究发现，决定人们基因的变异影响了智力的发展。选D【小题2】细节题：从第三段的句子：In the past, intelligence was critical for survival when our ancestors had to avoid dangerous animals and hunt for food. The difference of being smart or stupid is often life or death.可知Crabtree古代的人是因为自然选择的压力被迫聪明，选 B【小题3】细节题：从倒数第二段的句子：However, Crabtree’s theory has been criticized by some who say that early humans may have better hunting and surviving abilities, but people today have developed a more diverse intelligence.可知现在人们的智力和遥远的过去是不一样的，选D【小题4】推理题：从最后一段的句子：Thomas Hills of the University of Warwick, UK, told Live Science. “But now we have people of his intellectual capacity doing things and making insights(洞察力) that we would never have achieved in our environment of evolutionary adaptation.”可知 Thomas Hills 对Crabtree 的理论的态度是不支持的，选B

正好我需要