问题 单项选择题 A1型题

预防伊氏锥虫病最实用的措施为()

A.疫苗免疫

B.药物预防

C.淘汰病畜

D.搞好环境卫生

E.消灭媒介昆虫

答案

参考答案:E

解析:伊氏锥虫病是由伊氏锥虫寄生于马属动物、牛、水牛、骆驼的血液、淋巴液以及造血器官中引起的常见寄生虫病。主要经吸血昆虫机械性传播,虻及吸血蝇类在吸血时食入感染动物体内的虫体,再次吸血时将虫体注入其他动物体内,从而传播该病。因此,预防伊氏锥虫病最实用的措施为加强饲养管理,消灭媒介昆虫。故答案选择E。

选择题
阅读理解

阅读理解。

      More and more often we heard of people talking about Karaoke (卡拉OK). But what on earth it is about,

still remains a question for many people. Karaoke is a sort of acoustic equipment which was invented in Japan

around the middle of the 1970's. It means "a band without people" in Japanese. In fact, it is just a music tape

without words. This equipment first appeared in some public houses and snack bars, and mainly for the

customers to enjoy themselves. Most of the music in Karaoke was popular music. Therefore, at times, when

anyone felt like it, he might sing songs to the accompaniment of the music that came from the equipment.

Shortly after its invention, Karaoke was spread to the whole world. It was introduced to China and was

welcomed by many people. Although you are not a good singer, or even sometimes you may sing out of tune,

you can always enjoy yourself by singing Karaoke.

1. In this passage "band" means "group of persons _____." [ ]

A. who play games on the sports ground

B. who play music together

C. living in the same neighborhood

D. doing things together under a leader and with a common purpose

2. Karaoke is just a _____. [ ]

A. cassette tape with only music

B. cassette tape recorder

C. band from Japan

D. voice recording equipment

3. Karaoke was spread to the whole world _____. [ ]

A. as soon as it was invented

B. long before

C. not long after it was invented

D. before long

4. The main idea of this passage is _____. [ ]

A. all persons like to play Karaoke

B. to introduce Karaoke to the people

C. Karaoke is a wonderful equipment

D. Karaoke is used everywhere including snack bars