What can we infer from Para. 4?A.Americans were much concerned about and well prepared for
What can we infer from Para. 4?
A.Americans were much concerned about and well prepared for the possible threat.
B.Nuclear plants were the most important places that need protection.
C.Washington, DC would be perfectly safe under the protection of surface-to-air missiles.
D.These protective methods will make Americans less worried about the possible treat.