单选题 April 1Dear Valued Client,We would like to express our gratitude to you for renewing your Internet connection subscription with Magna Link. Your continued【K10】______is very important to us. To serve you better, we would appreciate your answering a one-page questionnaire dealing with the quality of our network. Please answer the questions and write down any problems you may have encountered with your connection. 【K11】______, send us back the form using the enclosed pre-paid envelope.Rest assured that your answers will remain confidential and be used exclusively for the company's research. 【K12】______your willingness to complete this survey, you will be entitled to a chance to win a new desktop computer. The lucky winner will be announced on May 25 and contacted in writing.We look forward to receiving your feedback. Thank you.Sincerely, Magna Link

【正确答案】 D

【答案解析】解析：根据语义“您持续的______对我们公司十分重要”，所有选项都可作为备选答案。作答时不能仅根据空格所在句进行选择，而应对邻近的上下文进行把握。前句中提到“感谢您更新网络连接功能”，因此可推知收信人再次使用了该公司的网络服务。故名词(D)patronage(光顾)为正确答案。(A)patience意为“忍耐”，(B)success意为“成功”，(C)observation意为“观察；遵守”。

【正确答案】 A

【答案解析】解析：因为空格与逗号一起处于句首连接副词的位置，故根据前句和空格所在句的语义关系，应选择连接副词(A)、(B)、(C)、(D)中的一个。在前句中请求对方填写问卷调查，空格所在句则要求邮寄调查问卷，故表示时间顺序的(A)Then(然后)为正确答案。(B)However意为“然而”，(C)Meanwhile意为“同时，在这期间”，(D)Otherwise意为“否则”，语义皆不通顺。

【正确答案】 D

【答案解析】解析：根据上下文语义，此处意为“感谢您填写调查问卷，为表谢意，您将有机会获得一台新型台式电脑。”故(D)In appreciation of(感谢……)为正确答案。(A)In charge of意为“负责……”，(B)On behalf of意为“代表……”，(C)By means of意为“把……作为手段，借助于……”。