题干

2014年,埃博拉出血热在利比里亚、塞拉利昂、几内亚和尼日利亚等西非国家爆发流行,该病有埃博拉病毒引起。有关该病及病毒的相关叙述错误的是(    )

A:病毒只有寄生在活细菌内才能生活

B:病毒依靠自己的遗传信息和宿主细胞内的物质制造新的病毒

C:病毒侵入人体后,会刺激淋巴细胞产生抵抗该病原体的抗体

D:给埃博拉出血热患者,注射该病痊愈者的血清进行治疗,属于非特异性免疫力

上一题 下一题 0.0难度 选择题 更新时间:2019-03-11 12:53:13

答案(点此获取答案解析)

D

同类题2

根据短文内容,选择正确答案。

                                                                                               C

    As you touch people and objects throughout the day, there are germs(细菌) on your hands. In turn, you can make yourself ill with these germs by touching your eyes, nose or mouth. Although it's impossible to keep your hands germ-free, washing your hands is good for you. It limits the chance of getting sick and is one of the best ways to avoid(避免) getting sick and spreading illness. Staying healthy can make you feel happier.

    Hand washing requires only soap and water, but do you really know when and how to wash your hands? The following information may be useful for you.

    When to wash your hands

    Always wash your hands before:

    ▲Preparing food

    ▲Eating

    ▲Giving medicine

    ▲Touching a sick or injured person Always wash your hands after:

    ▲Preparing food

    ▲Using the toilet

    ▲Touching an animal or animal toys or waste

    ▲Touching a sick or injured person

    Of course, it's also important to wash your hands whenever they look dirty.

    How to wash your hands

    It's generally best to wash your hands with soap and water. Follow these simple steps:

    ▲Wet your hands with running water.

    ▲Use soap.

    ▲Wash your hands for at least 20 seconds. Remember to wash the hands carefully, including the backs of your hands, wrists, fingers and fingernails.

    ▲Dry your hands with a clean towel.