问题 单项选择题 A1型题

家蚕核型多角体病不会出现的病症是()

A.脓蚕

B.环节肿胀

C.行动呆滞

D.体壁易破

E.体色乳白

答案

参考答案:C

解析:蚕、蜂的传染病,家蚕多角体病家蚕核型多角体病:患病蚕由于发育阶段不同,外表症状也有差异,但都表现出本病所特有的典型病征,即体色乳白,体躯肿胀,狂躁爬行,体壁易破。大蚕常爬行到蚕匾边缘堕地流出乳白色脓汁而死。病蚕初死时,由于脓汁泄尽,体壁贴于消化管上,外观呈现暗绿色,以此可区别于其他病蚕。不久,尸生腐败变黑。【考试科目】《兽医传染病学》

单项选择题
阅读理解

In the Netherlands,cycling isn't seen as eccrfriendly exercise; it's part of everyday life, as it's people's top choice to school and work. There are more bicycles than residents in the Netherlands. In cities like Amsterdam and The Hague, up to 70 percent of all journeys are made by bike.

So how did cycling become such a popular means of transportation in the European country?

In the 1970s, the Dutch government began to improve its cycling infrastructure(基础设施)due to both a social movement demanding safer cycling condition for children and the oil crisis in the Middle East, when oil producing countries stopped their exports to Western Europe.

To make cycling safer and more appealing, the Dutch have built the widest cycling net- work in the world. The country has over 40,000 kilometers of bicycle lanes and paths,which are clearly marked. They have smooth surfaces,separate signs and lights for those on two wheels. The lanes are wide enough to allow side-by-side cycling and passing.

In many cities the bike lanes are completely segregated(隔离的)from motorized traffic. And in many traffic situations cyclists are given priority(优先权)over drivers. Sometimes, where space is limited and both must share, you can see signs showing an image of a cyclist with a car behind accompanied by the words "Bike Street:Cars are guests".

As young people aren't allowed to drive alone until they are 18,cycling offers Dutch teen- agers an alternative form of freedom. The government also makes cycling training lessons a compulsory part of the Dutch school curriculum(课程).

Bike parking facilities are ubiquitous in the country. Cyclists are accommodated in the way motorists are elsewhere. Take Groningen, a city in the northeastern part of the Netherlands,for example. The city's central train station has underground parking for 10,000 bikes.

小题1:We can conclude that in the Netherlands cycling is____.

A.regarded as eco-friendly exercise

B.thought of as part of people's life

C.looked on as a way to lose weight

D.considered as a way to entertain小题2:What can we learn about the Netherlands from the first paragraph?

A.Most vehicles the Dutch use are buses.

B.The native people cycle the best in the world.

C.Everyone has one bike on average in the Netherlands.

D.The number of bikes is larger than the population there.小题3:Which of the following made the government improve the cycling infrastructure?

A.A large number of bikes.

B.Hope for healthy life style.

C.People's preference to bikes.

D.Children's safety demand and lack of oil.小题4:The underlined word "ubiquitous" in the last paragraph means“_,,.

A.high quality

B.unique

C.very common

D.special小题5:What does the Dutch government do about teenagers cycling?

A.It makes cycling covered by school education.

B.It encourages teenagers to cycle alone.

C.It will watch over teenagers who ride bikes.

D.It suggests teenagers cycling before driving.