问题 单项选择题 B型题

有家庭聚集现象的是()

A.甲型肝炎病毒

B.乙型肝炎病毒

C.丙型肝炎病毒

D.丁型肝炎病毒

E.戊型肝炎病毒

答案

参考答案:B

解析:乙型肝炎病毒(HBV),属嗜肝DNA病毒科。在电镜下可见到3种病毒颗粒:①Dane颗粒:是完整的HBA颗粒。分为胞膜和核心两部分,胞膜内含乙型肝炎表面抗原(HB-sAg),核心部分含有环状双股DNA、DNA聚合酶(DNAP)和核心抗原(HBcAg)和e抗原(HBeAg),是病毒复制的主体;②小球形颗粒;③管状颗粒。甲型病毒性肝炎属于微小RNA病毒科;丙型肝炎病毒属于黄病毒科,为RNA病毒;丁型肝炎病毒是一种缺陷RNA病毒;戊型肝炎病毒是无包膜球形RNA病毒。乙型病毒性肝炎的传播途径包括:①母婴传播;②输血传播:输入被污染的血液和血制品;③医源性传播:使用未经严格消毒的、被HBV污染的医疗器械,如手术和牙科器械、注射器、采血针、针灸针、内镜等均可引起HBV感染;④性传播;⑤密切生活接触传播:HBV感染患者可以通过密切日常生活接触传播给家庭成员,造成HBV感染的家庭聚集现象。

阅读理解

When Mary Moore began her high school in 1951, her mother told her, "Be sure and take a typing course so when this show business thing doesn't work out, you'll have something to rely on." Mary responded in typical teenage fashion. From that moment on, "the very last thing I ever thought about doing was taking a typing course," she recalls.

The show business thing worked out, of course. In her career, Mary won many awards. Only recently, when she began to write Growing Up Again, did she regret ignoring her morn," I don't know how to use a computer," she admits.

Unlike her 1995 autobiography, After All, her second book is less about life as an

award-winning actress and more about living with diabetes (糖尿病). All the money from the book is intended for the Juvenile Diabetes Research Foundation (JDRF), an organization she serves as international chairman. "I felt there was a need for a book like this," she says."I didn't want to lecture, but I wanted other diabetics to know that things get better when we're self-controlled and do our part in managing the disease."

But she hasn't always practiced what she teaches. In her book, she describes that awful day, almost 40 years ago, when she received two pieces of life-changing news. First, she had lost the baby she was carrying, and second, tests showed that she had diabetes. In a childlike act, she left the hospital and treated herself to a box of doughnuts (甜甜圈). Years would pass before she realized she had to grow up--again---and take control of her diabetes, not let it control her. Only then did she kick her three-pack-a-day cigarette habit, overcome her addiction to alcohol, and begin to follow a balanced diet.

Although her disease has affected her eyesight and forced her to the sidelines of the dance floor, she refuses to fall into self-pity. "Everybody on earth can ask, 'why me?' about something or other," she insists. "It doesn't do any good. No one is immune (免疫的) to heartache, pain, and disappointments. Sometimes we can make things better by helping others. I've come to realize the importance of that as I've grown up this second time. I want to speak out and be as helpful as I can be."

1. Why did Mary feel regretful?

A. She didn't achieve her ambition.

B. She didn't take care of her mother.

C. She didn't complete her high school.

D. She didn't follow her mother's advice.

2.We can know that before 1995 Mary___________。

A. had two books published

B. received many career awards

C. knew how to use a computer

D. supported the JDRF by writing

3. Mary's second book Growing Up Again is mainly about her __________

A, living with diabetes

B, successful show business

C. service for an organization

D. remembrance of her mother

4. When Mary received the life-changing news, she __________

A. lost control of herself     B. began a balanced diet

C. Med to get a treatment     D. behaved in an adult way

5. What can we know from the last paragraph?

A. Mary feels pity for herself.

B. Mary has recovered from her disease.

C. Mary wants to help others as much as possible.

D. Mary determines to go back to the dance floor.

填空题