问题
选择题
China sent up two manned spaceships and they were also great scientific _______ in the world.
A．campaigns
B．surprises
C．achievements
D．discoveries
答案
答案：C
题目分析：句意：中国发射了两艘载人宇宙飞船，它们也是世界伟大的科学成就。A.战役 B.惊讶，惊喜 C.成就，成绩 D.发现 由句意可知选C。
点评：本题难度较小，只要平时对于单词的记忆够牢固，问题就迎刃而解了。