题目内容：

What opinions did experts have about movement and transportation throughout history? Take a look.

 

1. Which of the following experts was a science fiction writer?

A. Lord Kelvin.          B. Lee DeForest.

C. Leonardo da Vinci.    D. Jules Verne.

2. Lee DeForest’s opinion was that _________.

A. airplanes would never fly

B. no person would ever reach the moon

C. people would fly in a machine with an overhead propeller

D. people would be able to travel under water in airtight ships

3.How many experts’ opinions proved right according to the passage?

A. One.   B. Two.   C. Three.   D. Four.