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Now, scientists still don't really know______．
A．whether animals can think about the past and the future
B．how children learn and what happens when we speak
C．why animals can understand some things more quickly than human beings
D．at what age, a child can speak his language very well
答案
更多“Now, scientists still don't really know______．A．whether animals can think about the past a”相关的问题
第1题
What can scientists do now？ 查看材料
A.Prescreen a baby"s sex.
B.Screen babies for desirable attributes.
C.Insert genes that parents want.
D.Craft genes in a lab.
第2题
According to the scientists, because of some damage, now Canada's forests ______.
A．are greatly damaged by global warming
B．approach the threatening line
C．take in less carbon dioxide than they produce
D．become net carbon sources
第3题
What can scientists do now？
A．Prescreen a baby's sex.
B．Screen babies for desirable attributes.
C．Insert genes that parents want.
D．Craft genes in a lab.
第4题
The significance of the finding is that ______.
A．people now know the number of chimpanzees is much smaller than expected
B．it may make it possible for scientists to discover new ways of treating AIDS
C．it proves some deadly human diseases can also be transmitted to wild animals
D．it Will soon help the scientists develop a vaccine that prevents the AIDS virus
第5题
According to the passage, what can scientists do now with the genetic testing technology？
A．Prescreen a baby's sex.
B．Screen babies for desirable attributes.
C．Insert genes parents want.
D．Craft genes in a lab.
第6题
Scientists now understand why people's mental faculties decline at different rates.
A．Y
B．N
C．NG
第7题
Now,scientists still don't really know______．
A．whether animals can think about the past and the future
B．how children learn and what happens when we speak
C．why animals can understand some things more quickly than human beings
D．at what age,a child can speak his language very well
第8题
A．misconceptions
B．misdemeanors
C．misgivings
D．misdirections
第9题
A.cure
B.treat
C.deal with
D.get rid of
第10题
47
A.Other scientists are now searching for evidence to prove this.
B.A Swiss writer named Erich Von Daniken wrote that the Nazca lines were designed as a landing place for UFOs
C.Scholars differ in interpreting the purpose of the designs
D.The largest pictures may have been the sites for special ceremomes
E.Seen from the ground, it looks like lines scratched into the earth
F.He called Nazca "the largest astronomy book in the world"
