【简答题】Letter A support, assure, ensure, sure, convey, respect Dear Mr.Vice President, I have the distinct pleasure to (1) to you, on the occasion of your birthday, my most sincere wishes of good health, hap...
【单选题】“Two centuries ago, Meriwether Lewis and William Clark left St. Lois to explore the new lands acquired in the Louisiana Purchase,” George W. Bush said, announcing his desire for a program to send men ...
A.
to show that both are of the same and immediate value.
B.
to encourage the American people to venture into space.
C.
to display the same spirit of discovery in space exploration.
D.
to stress that a Mars mission lacks sound and solid basis.