问题 单项选择题

病毒是一种( )微生物。

A.(A) 原核

B.(B) 真核

C.(C) 病原

D.(D) 无典型细胞结构

答案

参考答案:D

解析:[解题思路] 本题考查病毒的概念、非细胞生物的结构特点,微生物与疾病的关系等知识点,重点要知道病毒与细胞类生物的区别。 [解题关键] 病毒是没有细胞结构,专性寄生在活的敏感宿主体内,可通过细菌过滤器,大小在0.2μm以下的超微小微生物,既然没有细胞结构当然既不是原核微生物也不是真核微生物;病原微生物是指寄生于动物体内并能引起动物体发病甚至死亡的微生物,并非所有的病毒都能引起动物发病,如噬菌体只侵染细菌,烟草花叶病毒只侵染烟草,因此说病毒是一种病原微生物是以偏概全。

阅读理解

The summer vacation is the time to consolidate(巩固)your learning and prepare for the year ahead. In July and August Oxford Study Courses will once again hold its Mid-IB Summer School for students half way through their IB Diploma(国际预科证书).

We’ll be back giving another generation of IB students a unique opportunity to sample a way of life enjoyed by students at famous universities.

Students who have completed the first year of their IB Diploma can join us and we can help them prepare for their important second year.

Students can choose how many subjects they study. Each subject is studied for one week. You can attend up to 5 weeks.

The Mid-IB Summer School is held at Cambridge University in the UK (between June 20th and August 1 st) and at Harvard University and the Massachusetts Institute of Technology (MIT)in Boston, USA (between July 6th and July 25th).

Student comments

◆ “The classes have shown me new approaches to learning. I have also learned how to approach exam questions and now feel confident in doing so.”

◆ “It was cool creating tight and close relationships with other students from around the world, realizing we all had a connection to each other.”

◆ “I really enjoyed the level of independence, although I felt like people were watching out for us. I also felt like an Oxford student!”

◆ “I have enjoyed the learning style and the course work has been extremely beneficial(有益处的)academically.”

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Enjoy the summer

Our Summer School gives you an action-packed social scene with visits to the fun places in the area, organized sports and social events, and advice on how to enjoy your free time in these amazing cities with your new friends. Welcome to contact us at ose@ose-ib.com or on +44(0)1865 521802!

小题1:The Mid-IB Summer School is intended for the students who ________.

A. have finished their first year of college

B. intend to apply for Oxford University

C. don’t know how to spend their summer vacation

D, have completed the first year of their IB Diploma

小题2:What can be inferred from the text?

A.Students will visit many fun places around the world.

B.A student can at most choose 5 subjects.

C.Only students from England and America have access to the school.

D.Students can obtain their IB Diploma when they finish their studies.小题3:Which of the following about the Mid-IB Summer School is true?

A.It begins in July.

B.It provides only academic courses.

C.It is held in three universities.

D.Students attending will study for 5 weeks.

单项选择题 A1型题