Read the following passage and m...

Câu hỏi: Read the following passage and mark the letter A,  B,  C, or D on your answer sheet to indicate the correct answer to each of the questions.

A. it was more expensive than most space shuttles. 

B. many people believed space exploration was a waste of time. 

C. people were afraid of what might be found. 

D. it was defective for its first three years in space.