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
It can be inferred from the passage that ______.
A．most sharks are dangerous to human beings
B．sharks only attack someone in black wet suits
C．movies and popular novels are always misleading
D．sharks are a valuable resource for human beings
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
相关试题