How did the researchers carry out their study？
A. They studied the findings of several previous research projects.
B. They conduced a questionnaire with 411 pilots.
C. They collected data from the database at the Johns Hopkins University.
D. They analyzed the circumstances of the crashes involved.
查看答案
A．evenB．the sameC．hardlyD．do
A. even
B. the same
C. hardly
D. do
A．factsB．livesC．natureD．world
A. facts
B. lives
C. nature
D. world
According to the passage, what is a relatively new focus in archaeology？
A. studying prehistoric cultures
B. investigating ancient sites in what is now the United States
C. comparing the culture of North America to that of Europe
D. studying the recent past
微信支付 
支付宝支付