16. The newlybuilt Science Building seems ______ enough to last a hundred years.
A) spacious C) substantial
B) sophisticated D) steady
17. He smiled again with an air of ______ contentment and said, “It’s the first time I’ve ever done what I wanted to do.”
A) supreme C) supplementary
B) superficial D) superior
18. Nylon is a kind of ______ material widely used in our daily lives.
A) artificial C) combined
B) synthetic D) systematic
19. Monica was______with me for further particulars.
A) curious C) urgent
B) eager D) hasty
20. My grandfather was already over seventy, but he was still______and lively.
A) effective C) singular
B) organic D) vigorous
[答案与精解]
16. C
［注释］新建的科技楼看上去非常坚固，足可维持上百年。substantial坚固的，坚实的；A)spacious宽敞的；B) sophisticated老练的，圆滑的；复杂的；采用先进技术的, 需要专门操作技能的：a sophisticated girl一个老于世故的女孩子；sophisticated modern weapons复杂的现代武器；sophisticated new equipment新的尖端设备；D)steady稳定的。