问题 单项选择题

7月,南方某500头母猪群,卫生状况较差,近一周内不同胎次母猪在妊娠后期发生流产,产死胎,木乃伊胎和弱仔。公猪体温高达41至42℃,随后出现一侧或两侧睾丸肿大,嗜睡等症状,剖检流产胎儿见大脑和小脑发育不全,液化性坏死。

该病最可能的诊断是()

A、伪狂犬病

B、布鲁氏菌病

C、猪乙型脑炎

D、猪细小病毒病

E、猪链球菌病

答案

参考答案:C

阅读理解

阅读理解。

    Many years before the United States was founded (建立), Americans had already invented barbecues.

But the first barbecues, in fact, were the invention of the Taino Indians of Haiti, who dried their meat on

raised frames (架子)of sticks over fires. Spanish explorers spelled the Taino word as barbacoa, and as

time passed, English settlers along the Atlantic coat had their own barbecues.

    One summer day in 1773, Benjamin Lynde, a citizen of Massachusetts, wrote in his diary, "Fair and

hot; Browne; hack overset." That is, on a bright and hot day he went to the Brownes to attedn a barbecue,

and his carriage (马车) fell over. It shows that the barbecue had its social occasion by that time. Large

animals would be roasted whole on frames over hot fires, and neighbours would be invited to dinner.

    In later centuries, as settlers moved to the west, the barbecue went along with it, reaching an especially

large size in Texas, where a pit (坑) for fuels (燃料) such as tree branches might be over ten feet deep.

Today, the barbecue grills (烧烤架) which are fueled by charcoal (木炭) or electricity are likely to be small

and easy to move, and can cook only parts of an animal at a time, but people still have barbecues out of

doors and always invite their neighbours or friends over.

1. Who invented the barbecues first in history? [ ]

A. American people.

B. Taino Indians.

C. Spanish explorers.

D. English settlers.

2. The second paragraph mainly tells us that the barbecue ______. [ ]

A. is only held on a hot sunny day

B. welcomes people who keep diaries

C. is held both indoors and outdoors

D. has its social occasion for over 200 years

3. The underlined expression "social occasion" can be best translated into ______. [ ]

A. 社交功能

B. 社会福利

C. 社会地位

D. 社会背景

4. The following are all the barbecue ways EXCEPT ______. [ ]

A. drying meat on raised frames of sticks over fires

B. roasting a whole animal over a pit full of burning tree branches

C. cooking parts of animals over fires on grills fueled by charcoal

D. heating meat in the bright and hot daylight

填空题