Which sentence below best expresses the essential information in the highlighted sentence
A. Numerous people had access to books and education because of the printing press．
B. It took several people to operate a printing press, so the number of skilled workers grew rapidly．
C. Previously forbidden books became available to people that could afford a private education．
D. The printing press made it possible for books to include more information than ever before．
查看答案
The bias blind spot can prompt a scientist to______.
A. overemphazise the value of experiments
B. refuse to accept the failure of his experiments
C. discard some valuable data
D. disbelieve data collected by others
According to the passage, which factor might cause the population of a species to decrease
A favorable amount of light and water
B. An ability to hide from or defend against predators
C. A large number of other species competing for food
D. A greater number of births than deaths
Which of the following plays least in fixing the public sector？
A. Weakening the strikers' power.
B. Restricting unions' legal rights.
C. Reducing public-sector pay deals.
D. Making small productivity gains.
According to the passage, a child who is capable of concrete operations can
A. perform. tasks that may confuse an adult
B. install an extra card on a computer
C. make two rows of coins look the same
D. reason systematically about quantity and space
微信支付 
支付宝支付