一、Vocabulary and Structure（10 points,1 point for each item）从下列各句四个选项中选出一个最佳答案，并在答题卡上将相应的字母涂黑。
1.Experts have found that normal sleep can be divided into five______stages.
A.moderate
B.initial
C.distinct
D.advanced
答案：C
2.The student_____described the beautiful mountains and rivers in his home town.
A.artificially
B.vividly
C.critically
D.viciously
答案：B
3.What her grandfather said left a_____impression on her mind.She still remembers
it.
A.final
B.vague
C.deep
D.main
答案：C
4.By the end of next year the bridge _____.
A.is to complete
B.has been completed
C.will be completing
D.will have been completed
答案：D
5.We have greatly _____the procedure according to the chairmans suggestion.
A.stimulated
B.perceived
C.obscured
D.simplified
答案：D
