Read the following passage and mark th...

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