1. Actors dressed in authentic costumes re-enact the battle.
A. faithful B. royal C. genuine D. sincere
解释：authentic： known to be true or genuine 真实的; 真正的:
an authentic document, signature, painting 正式文件﹑ 亲笔签字﹑ 原作绘画.
trustworthy; reliable 可信的; 可靠的: an authentic statement 可靠的陈述
2. People who travel by rail still read an immense amount.
A. immediate B. enormous C. equal D. moderate
解释：immense：extremely large; enormous 巨大的; 广大的
3. He demolished my argument in minutes.
A. disapproved B. refuted C. accepted D. supported
解释： demolished： to show that an idea or theory is completely wrong:
A recent book has demolished this theory;
destroy 推翻, 驳倒:
Her article brilliantly demolishes his argument. 她的文章精辟地批驳了他的论点.
refute: rebut to prove that sth is wrong Synonym: REBUT
to refute an argument / a theory 驳斥一个论点
4. Polluted water sources are a hazard to wildlife.
A. evidence B. danger C. case D. picture
解释： hazard：danger; risk 危险; 有危险的事物; 风险:
Smoking is a serious health hazard. 吸烟严重危及健康
5. Ashley gazed at him, her thoughts in turmoil.
A. failure B. doubt C. confusion D. relief
解释：turmoil：great disturbance, agitation or confusion 骚动; 混乱; 动乱:
The country was in turmoil during the strike.
这个国家在罢工期间陷於一片混乱