1.[单选题]The main purpose of this passage is to ______.
A.describe that animals can make different sounds
B.prove that animals’ voices can play practical roles
C.inspire the readers to make more inventions
D.startle the readers with some shocking facts
2.[单选题]The discovery of echolocation may help with all of the following EXCEPT
A.measuring the depth of the sea
B.distinguishing different kinds of fish
C.improving the functions of radar
D.varying the size and nature of an object
3.[单选题]As it is discussed in the passage, the squeaks of bats can be functionally compared with ________.
A.human languages
B. a mountainside
C.a shoal of fish
D. taps on a ship
4.[单选题]By saying "A shoal of fish will do this"(Lines 6-7, Para. 2), the author means ________.
A.only one special kind of fish can reflect sounds
B.only one special kind of fish can be used to help locate a ship
C.a large group of fish can reflect sounds
D.a large group of fish can be used to help locate a ship
5.[单选题]Which of the following statements can be inferred from the passage?
A.Animals are more intelligent than humans.
B. Humans are more intelligent than animals.
C.Animals are often compared with human inventions.
D.Humans are often inspired by animals.