附加题（选答，共10小题，每道题1分）
1. Not having a good command of English can be a serious ________ preventing you from achieving your goals.
| A．obstacle | B．fault | C．offense | D．distress |
Every year about one million tourists visit Stonehenge, which is believed __________before the Pyramids, about 4,000 years ago.
| A．to build | B．to have built |
| C．to be built | D．to have been built |
__________I don’t like the film, the leading actor’s performance gave me a deep impression.
| A．When | B．Since | C．If | D．While |
—Will you buy me a new iPod, Dad?
—OK. You __________have one if you promise to take care of it.
| A．might | B．must | C．could | D．shall |
Jack almost fell off a big tree while climbing it, but managed to __________until help came.
| A．put on | B．hang on | C．turn on | D．take on |
The function of an advertisement is that it can __________customers to buy the kinds of goods.
| A．employ | B．persuade | C．prepare | D．urge |