1. The flu virus infected almost the entire class.
    全班几乎人人都染上了流行性感冒病毒。

2. These lessons are not the only solutions to the crisis but until there is a cure for AIDS, education represents the only safe measure to guard against the virus.
    这些经验不是解决艾滋病危机的惟一方法，但在找到治疗艾滋病的方法之前，教育不失为预防感染艾滋病毒的惟一安全的措施。

3. The actual patterns of spreading of the AIDS virus change from culture to culture.
    艾滋病的实际传播方式又因文化的差异而有所不同。

4. The WHO estimates that Bangkok, Thailand IV-drug users having the AIDS virus increased from less than 1 percent in August 1987 to 30 percent one year later.
    世界卫生组织估计泰国曼谷携带艾滋病毒的静脉注射吸毒者从1987年8月的不到1%一年之后增加到了30%。

5. Nearly half of those diagnosed with the virus are blacks and Latinos.
    被诊断感染艾滋病毒的人当中有一半是黑人和来自拉丁美洲的美国人。

6. Another 185,000 of the one million infected with the HIV virus are also expected to die.
    此外，100万感染艾滋病毒的人当中有18.5万人也将不久于人世。

7. Also, at least five million persons likely have the human immunodeficiency virus (HIV) (艾滋病病毒), which causes AIDS.
    此外，至少有500万人可能携带导致艾滋病发作的艾滋病病毒。

8. Scientists have isolated the virus causing the epidemic.
    科学家们已分离出引起这种流行病的病毒.

9. Scientists discovered that this particular variety of rabbit was susceptible to a fatal virus disease, myxomatosis.
    科学家们发现, 这种特殊品质的兔子易患一种叫做"多发性粘液瘤"的致命病毒性疾病.

10. Scientists discovered that this particular variety of rabbit (and apparently no other animal) was susceptible to a fatal virus disease, myxomatosis.
    科学家们发现，这种特殊品种的兔子（显然不包括别的动物）易患一种叫"多发性粘液瘤"的致命毒性疾病。