肛门鉴别法鉴别鉴别雏鸡的依据是检查()、()。

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问题:

肛门鉴别法鉴别鉴别雏鸡的依据是检查()、()。

考点:畜牧、兽医科学畜牧生产学畜牧生产学题库
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Part 3


Questions 19-25


·Read the following passage and answer questions 19-25.
·For questions 19-25, choose the correct answer from A, B, C and D.
·Mark your answer on the Answer Sheet.
The number of speakers of English in Shakespeare’s time is estimated to have been about five million. Today it is estimated that some 260 million people speak it as a native language. Mainly in the United States, Canada, Great Brittany, Ireland, South African, Australia and New Zealand. In addition to the varieties of English found in these areas, there are great many regional and social varieties of the language, as well as various levels of usage that are employed both in its spoken and written forms.
It is virtually possible to estimate the number of people in the world who acquired adequate work knowledge of English in addition to their own languages. The purpose for which English is learned and the situation in which such learning takes place are so varied that it is difficult to define and still more difficult to assess what constitutes an adequate working knowledge for each situation.
The main reason for the widespread demand for English is its present-day importance as a world language. Besides serving the infinite needs of its native speakers, English is a language in which some of the most important works in science, technology, and other fields are produced and not always by native speakers. It is widely used for such purpose as meteorological and airport communications, international conferences, and the spread information over the radio and television networks of many nations for the number of developing countries, especially former British colonies. Many of these countries have multi-lingual populations and need a language for internal communication as well as for international communication and for access to the scientific and technological development in the west.

An appropriate title for this passage would be ______.

A.English as a World Language

B.International Communications

C.The Difficulty of Learning English

D.The Standard Variety of English

题型:填空题

变形监测网的精度要求主要取决于()。

A、变形监测的目的和允许变形值的大小

B、变形监测的周期和建筑物的类型

C、变形监测的方法和变形的速度

D、以上都不是

题型:填空题

肺结核的肺叶切除术常见并发症包括()、()、()、()等。

题型:填空题

发车时,遇有什么情况,应通知邻站?

题型:填空题

肝性脑病昏迷期哪项不正确

A.昏迷

B.可有抽搐

C.扑翼样震颤阳性

D.脑电图异常

E.反射可消失

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