第I卷（客观题，共50分）
一、单项填空 在A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。（本大题共14分，每小题1分）
1. ---Wow, ____useful and fashionable iphone5s you have bought!
---Yes, it is ____ great help to me, ____ I must say it also cost me a lot.
A what, a, but B what a n, the, And
C What a, a , And D How, a , But
2. ---I hear the government is going to ___ the air quality with the new standard PM2.5，isn’t it？
---Yes, ___ the air pollution will get more serious.
A discover, therefore B revise, anyway
C review, however D test, otherwise
3. _____ you can understand how the human body woks, you need to have some knowledge of chemistry
A As soon as B Though C So that D Since
