______ label to each of the trees, with detailed introduction of their features, and visitors will know more about them and how to protect them.
| A．To attach | B．Attach | C．Attached | D．Having attached |
2．--- Why were you absent yesterday?
--- I caught a cold, _______I had been walking around in the rain.
| A．but | B．so | C．and | D．For |
第一部分：英语知识运用（共两节, 满分30分）
第一节：单项填空（共20小题；每小题0.5分，满分10分）
从每题所给A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
1．A subway is an effective way to solve traffic problems in_____big city. It has evident advantages, such asspeed and convenience.
A．the; the B．a; the C．a; / D．the; a
--Why were you not at the concert last night?
--I _____ a close game between Seattle Sonics and Miami Bucks.
| A．watched | B．had watched | C．was watching | D．have been watching |
-- How do you find the new job?
-- It’s hard to find a satisfying job, so I hardly care what it is _____ I can make money.
| A．unless | B．even if | C．however | D．as long as |
I just don’t understand ____that leads to so many teenagers becoming addicted to playing computer games.
| A．why it does | B．what it does |
| C．what it is | D．why it is |