英語4級閱讀理解(新題型)（簡體書）

46.（C）根據C）段第一句It is easy to overlook or miss the signs of acute HIV infection.急性艾滋病病毒感染的跡象是很容易被忽視的。
47.（A）根據A）段第一句Acute HIV infection refers to the first stage of infection，the time immediately after a person is infected and before an antibody response to the infection develops.急性艾滋病病毒感染是感染的第一個階段，就在患者被感染之后和對感染的抗體形成之前。
48.（D）根據D）段第一句Acute infection cannot be detected by most routinely used HIV tests.大多數例行的、常用的艾滋病病毒檢查無法查出急性感染。
49.（F）根據F）段第三句These two months are critical for HIV prevention：it is estimated that almost half of HIV transmissions occur when a person is in this acute HIV infection phase。這2個月對預防艾滋病病毒是至關重要的：有幾乎一半的艾滋病病毒傳播發生在急性感染階段。
50.（H）根據H）段第一句Treating HIV during the acute infection stage may boost the immune system and slow the progression of HIV disease.在急性感染階段治療艾滋病可能會提高免疫系統功能并減緩艾滋病病毒的發展。
51.（L）根據L）段第一句Acute HIV infection is hard to detect and often goes undiagnosed.急性艾滋病病毒感染很難被查出，通常也無法診斷。
52.（N）根據N）段第一句Identifying persons with acute HIV infection can be an effective HIV prevention strategy，as it focuses on persons at greatest risk for transmission.診斷急性艾滋病病毒感染的病人是艾滋病防治中有效的措施，因為它所針對的病人最有可能傳播病毒。
53.（B）根據B）段第一句Determining acute HIV infection is critical for HIV prevention efforts.急性艾滋病病毒感染的確診對于艾滋病的預防是至關重要的。
54.（F）根據F）段第一句The only way for persons to know that they are HIV+and take precautions to prevent transmission is to be tested for HIV.對人們來說，要讓他們知道自己是艾滋病病毒攜帶者并采取措施防治病毒傳播的唯一方法就是進行檢查。
55.（l）根據I）段第三句However，starting HIV medications is a major decision：there are many side effects and toxicities and there are currently no long—term studies on the effectiveness of treatment for acute infection.藥物治療艾滋病有一些副作用和毒性，目前還沒有對于急性感染治療效果的長期研究。