单选题
Read the following text. Choose the best word(s) for each numbered blank and mark [A], [B], [C] or [D] on ANSWER SHEET 1.

There are many medical problems in the modern society. One of the most alarming medical problems in the world is a {{U}}(21) {{/U}} disease named HIV virus. This kind of virus is first {{U}}(22) {{/U}} twenty years ago. It weakens the body and develops fully blown AIDS. AIDS is not obvious in the early stage. Sometimes symptoms occur within a few weeks after {{U}}(23) {{/U}}. They are often flu-like, such as {{U}}(24) {{/U}}, fever, headache, diarrhea and night sweats.
The three main {{U}}(25) {{/U}} routes of HIV are sexual contact, exposure to infected body fluids or tissues and from mother to {{U}}(26) {{/U}} or child during perinatal period. This kind of virus can always {{U}}(27) {{/U}} some families apart. People's first {{U}}(28) {{/U}} is a denial about their loved one's condition. HIV positive people are those who have tested positive for the virus. {{U}}(29) {{/U}} they are related to conditions that are far less serious than HIV, they can only be treated when potential patients are {{U}}(30) {{/U}} of the risk of infection. They choose to deal with the risk instead of avoiding of it.
{{U}} (31) {{/U}} tests are the best way to monitor HIV because they can slow the progress of the virus {{U}}(32) {{/U}} time. But we have to admit that it is no longer associated {{U}}(33) {{/U}} death immediately, but drugs are not {{U}}(34) {{/U}}. Doctors {{U}}(35) {{/U}} HIV positive people to have regular tests to monitor the progress of the disease.
By now there is still not successful vaccination against HIV, so much effort has been {{U}}(36) {{/U}} mainly on educating the public about {{U}}(37) {{/U}} HIV is passed on. In addition, more emphasis is contributed to introduce to the citizens about personal measures that {{U}}(38) {{/U}} the risk of infection. "We are concerned about these individuals, because we know that early treatment can help {{U}}(39) {{/U}} their life and ensure that they do not {{U}}(40) {{/U}} others, including their newborn children. " Dr Donald Gelhorn (president of the College of Family Physicians of Canada) says.

【正确答案】 B

【答案解析】[命题目的] 此题考查近义词辨析和对文章内容的理解。 [解题要点] A项意为“严重的”，B项意为“致命的”，c项意为“坚韧的”，D项意为“危险的”。tough和dangerous一般都不跟disease搭配，根据前半句“the most alarming”和后半句“HIV virus”可以看出这种疾病是致命的，B选项比A选项表述更准确，故正确答案为B选项。

【正确答案】 A

【答案解析】[命题目的] 此题考查近义词辨析。 [解题要点] A项意为“确认、证明某人(某事物)”，如：can you identify your umbrella among this lot?根据文意“这种病毒在20年前被首次…”可知，此处表示“确认”的意思，A选项符合文意；B项意为“诊断”；C项意为“检测，检查”；D项意为“认出(原来已经认识的人或物)”，如：I recognized her by her red hat. 此三项均不符合文意，故正确答案均为A选项。

【正确答案】 A

【答案解析】[命题目的] 此题考杏短语搭配。 [解题要点] tear sth apart意为“彻底毁灭或击败某事物”，如：The country was torn apart by fierce tribal hostilities; set apart意为“使分开”，如：He was set apart because he suffered an infectious disease; put apart意为“放在一边”，如：One desk was put apart from the others. leave apart表示“使处于分开状态”，并不表示分开的动作。根据文意可知，艾滋病会使一些家庭四分五裂，故正确答案为A选项。

【正确答案】 D

【答案解析】[命题目的] 此题考查对上下文的理解。 [解题要点] A项意为“反射；影像；沉思”，如：On further reflection, I saw that she might be right, after all. B项意为“意识到”，如：I was struck by the sudden realization that I would probably never see her again. C项意为“认出”，D项意为“反应”，根据后面“…a denial about their loved ones' condition.”可知，此处指的是一种反应，故正确答案为D选项。

【正确答案】 D

【答案解析】[命题目的] 此题考查连词的用法。 [解题要点] A项表因果关系，B项表转折关系，C项也是因果关系的一种，D项表让步关系。根据原文上下句，“they are related to conditions that are far less serious than HIV” “they can only be treated when potential patients are aware of the risk of infection”可知，两个分句之间需要一个表示让步关系的连词，只有D选项符合要求，故正确答案为D选项。

【正确答案】 C

【答案解析】[命题目的] 此题考查词义辨析和对上下文的理解。 [解题要点] A项意为“有用的”，B项意为“不可或缺的”，C项意为“万能的”，D项意为“必要的”。联系下文，“Doctors urge HIV positive people to have regular tests to monitor the progress of the disease.”医生劝说HIV病毒阳性携带者定期接受检查，控制疾病发展。根据这句话可以看出：药物“不是万能的”，故正确答案为C选项。

【正确答案】 D

【答案解析】[命题目的] 此题考查词义辨析。 [解题要点] impel意为“受到外在压力的驱动”，含有被迫之意，如：Impelled by feelings of guilt, John wrote to apologize. spur意为“超常的激励和鞭策”，如：International competition was a spur to modernization. force意为“强迫”，如：The rider forced his horse on through the storm. urge意为“竭力推荐或力陈某事物”，含有“劝告”的意思，如：Motoring organizations are urging drivers not to travel by road if possible. 根据后文“医生…艾滋病病毒阳性携带者进行定期检查，控制病情发展”可以推断出，此处想表达的意思是“劝说”，故正确答案为D选项。

【正确答案】 C

【答案解析】[命题目的] 此题考查近义词辨析。 [解题要点] compress意为“压缩”，侧重把某物压缩成特定的面积或形状，如：The farmers compressed straw into blocks for burning. condense意为“减缩，摘要”，侧重表示压缩文章、书籍、讲话等，如：Condense this paragraph into a few sentences. reduce意为“减少，减小，降低”，如：reduce the number of patients，与文中“the risk of infection”连用，表示“降低传染风险”，符合文意；cut意为“削减(某事物)”，如：cut prices，taxes，spending，production，故正确答案为C选项。

【正确答案】 B

【答案解析】[命题目的] 此题考查近义词辨析。 [解题要点] spread意为“扩大，伸展，延展”如：The forest spreads as far as the river. extend意为“使(某物)(在空间或时间上)更大，更长，延长”，如：The hot weather extended into October. stretch意为“撑开，延伸”，如：The long white beaches stretch for mile along the coast. magnify意为“放大”，指用透镜或显微镜使物体看上去大一些。如：His eyeglasses magnify words so he can read them．他借助眼镜把字放大以便能够阅读。根据前后“…early treatment can help…their life…”可知，此处表达的是早期的治疗能帮助他们延长寿命，故正确答案为B选项。

【正确答案】 D

【答案解析】[命题目的] 此题考查近义词辨析。 [解题要点] influence意为“影响”，如：Don't let me influence your decision. affect意为“侵袭，感染”，如：Cancer had affected his lungs. effect意为“使(某事物)产生，使发生，引起”，如：effect a cure, a change, a sale. infect意为“使某人(某物)传染；感染”，如：Her cheerful spirits and bubble laughter infect the whole class．根据上下文分析，本句侧重讲的是早期治疗的好处，早期治疗能够“确保他们不会传染给他人”，故正确答案为D选项。