单项选择题

According to the passage, we need sharks because of the following except ______.

A．they are delicious food for us
B．they are companions of human beings
C．they can help rescue human beings
D．they can help improve human health
<上一题 目录 下一题>
热门 试题

单项选择题
By the second sentence of Paragraph 2, the author means to show that ______.
A．pigs attack human beings more frequently than sharks
B．people get hurt much more easily in a car accident
C．people get killed more easily by pigs or car accident than by sharks
D．sharks rarely kill human beings when they are not provoked to do so
单项选择题
The passage mainly discusses ______.
A．the number of people being attacked by sharks
B．the benefits of sharks to improving human health
C．the dangers sharks have brought to human beings
D．the relationship between sharks and human beings
相关试题