单选题 Questions 141-143 refer to the following notice.
Thank you for becoming a Korea Bank credit card customer. Enclosed is your new credit card. Before using your card, please thoroughly read the enclosed documents (141) your rights and responsibilities as a Korea Bank credit card user. if you have any further questions, call 255-HELP. To activate your card, call 255-HELP to confirm that you have received your card. Your card will not be valid for use (142) you call this number.
In an (143) event of loss or theft, please call 255-LOST immediately. Thanks.

单选题 A. described
B. describing
C. are described
D. describe
【正确答案】 B
【答案解析】高级问题 空格内应填入非谓语动词，所以应在A选项和B选项之中选择答案。空格前后都有名词，需要在-ing和p.p.中选择，此时通常-ing是正确答案。这个-jng修饰前面的名词，同时将后面的名词当作宾语。
单选题 A. earlier
B. prior to
C. in advance
D. until
【正确答案】 D
【答案解析】中级问题 空格前有“主语+动词”的结构，所以空格内应填入连词。所有选项的词义都很近似，但这里只有D选项是正确答案。until既可以做介词，又可以做连词。early是形容词或副词，prior to是介词，in advance是副词。
单选题 A. unlikely
B. doubtful
C. defective
D. rigorous
【正确答案】 A
【答案解析】高级问题 本题考查形容词的用法。A选项虽然看起来像副词，但实际是形容词，词义上也最合适。in the unlikely event of意为“在(不太可能发生的)……情况下”，在假设不太好的事情发生时使用。
[高频词语] appreciate 感谢；鉴别，欣赏 modification 修订 however(adv.) 不管怎样；(conj.) 然而 regarding (prep.) 关于 terms and conditions 条款