问题 单项选择题

关于风疹病毒的描述哪项不正确

A.风疹病毒可通过呼吸道和直接接触传播

B.风疹病毒属于披膜病毒科风疹病毒属

C.风疹病毒是单链,正链RNA病毒

D.风疹病毒只有一个血清型

E.风疹病毒易感者全部是显性感染

答案

参考答案:E

解析:属节肢介体病毒中的披盖病毒 (Togavirus)群,为风疹的病原病毒。通过患者鼻咽分泌物的飞沫直接传染,经14~21天潜伏期后,后头部、耳后部、颈部等处的淋巴节肿大,发热,并且1~2日后,颜面和头部即可出现风疹,并顺次扩大到颈部、躯干部和四肢,约经3日消退。如妊娠初期罹患风疹,胎儿常发生白内障、小眼球症、重听、心脏病和小头症等先天性异常。人是病毒唯一自然宿主。

阅读理解

Success is often measured by the ability to overcome adversity. But, it is often the belief of others that gives us the courage to try.

J. K. Rowling, author of the Harry Potter book series, began writing at age 6. In her biography, she remembers with great fondness when her good friend, Sean, whom she met in secondary school, became the first person to encourage her and help build the confidence that one day she would be a very good writer.

“He was the first person with whom I really discussed my serious ambition to be a writer. He was also the only person who thought I was bound to be a success at it, which meant much more to me than I ever told him at the time.”

Despite many setbacks Rowling persevered in her writing, particularly fantasy stories. But it wasn't until l990 that she first conceived the idea about Harry Potter. As she recalls, it was on a long train journey from London to Manchester that “the idea of Harry Potter simply fell into my head. To my immense frustration(沮丧), I didn't have a functioning pen with me, and I was too shy to ask anybody if I could borrow one. I think, now, that this was probably a good thing, because I simply sat and thought, for four(delayed train) hours, and all the details bubbled up in my brain, and this scrawny, black-haired, bespectacled boy who didn't know he was a wizard became more and more real to me.”

That same year, her mother passed away after a ten-year battle with multiple sclerosis, which deeply affected her writing. She went on to marry and had a daughter, but separated from her husband shortly afterwards.

During this time, Rowling was diagnosed with clinical depression. Unemployed, she completed her first novel in area cafes, where she could get her daughter to fall asleep. After being rejected by l2 publishing houses, the first Harry Potter novel was sold to a small British publishing house.

Now with seven books that have sold nearly 400 million copies in 64 languages, J. K. Rowling is the highest earning novelist in history. And it all began with her commitment to writing that was fostered by the confidence of a friend !

小题1:Who believed J. K. Rowling was to be a good writer?

A.Her friend Sean.

B.Her mother.

C.Her daughter.

D.Her husband.小题2:Rowling first came up with the idea about Harry Potter         .

A.at the age of 6

B.on a train journey

C.after her mother's death

D.in her secondary school小题3:She felt frustrated on the train because         .

A.her train was delayed for four hours

B.she didn't have a pen with her

C.her mind suddenly went blank

D.no one would offer her help小题4:It can be concluded from Paragraph 5 and 6 that Rowling is         .

A.open-minded

B.warm-hearted

C.good-natured

D.strong-willed小题5:The text mainly tells us         .

A.hardship makes a good novelist

B.the courage to try is a special ability

C.you can have a wonderful idea everywhere

D.encouragement contributes to one's success

单项选择题 A1/A2型题