To tell surfers to stay away from sharks.
To ask people to stop killing sharks.
To let us know the reasons for shark attacks on people.
To show that humans are much stronger than sharks.
第1题：
What does the author mean by the word "progress" in this passage?
A．Urbanization.
B．Economic growth.
C．Cultural development.
D．Increase of population.
第2题：
What does the author mainly discuss in the text?
A. Technology. B. Sustainability.
C. Ethanol energy. D. Environmental protection.
第3题：
A、according to
B、due to
C、Based to
D、In light of
第4题：
第5题：
What is the passage mainly about?
A． The universal value of the world heritage in Liverpool
B． The exciting experience of the author in Liverpool
C． The special cultural atmosphere of Liverpool
D． The beautiful historic sites of Liverpool
第6题：
What is the passage mainly about?（ ）
A．The changes of the author's attitude to her mother's English．
B．The limitation of the author's perception of her mother．
C．The author's misunderstanding of“limited”English．
D．The author's experiences of using broken English．
第7题：
According to the passage, what helps to explain why the population problem has come on "all of a sudden"?
A) The penny which doubles itself every day for one month.
B) The time span of at least two million years in human history.
C) An illustration of the exponential growth rate given by the author.
D) The large amount of money you would luckily make after the fourth week.
第8题：
What is the passage mainly about?
A. The universal value of the world heritage in Liverpool.
B. The exciting experience of the author in Liverpool.
C. The special cultural atmosphere of Liverpool.
D. The beautiful historic sites of Liverpool.
第9题：
第10题：