下列文化现象属于腐朽文化的是( ) ①电脑算命 ②有殖民色彩的“洋店名” ③宣传

口腔颌面部血运循环丰富与创伤的关系哪种说法不正确（）。

A.伤后出血多

B.及时清创缝合最迟不超过12小时

C.组织肿胀出现早，而且明显

D.组织抗感染能力强，愈合快

E.易形成血肿而影响呼吸

在同一生物界里，常用的分类单位从小到大依次是（   ）

A．门、纲、目、科、属、种

B．种、属、科、目、纲、门

C．门、纲、科、目、属、种

D．种、科、属、目、纲、门

Look! She __ at table .[ ]

A. eats  

B. eatting    

C. is eatting  

D. is eating

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 Britain, Ireland, South Africa, Australia and New Zealand. In addition to the standard varieties of English found in these areas, there are a 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.

In fact, it is impossible to estimate the number of people in the world who have acquired an adequate working knowledge of English in addition to their own languages. The purpose for English learning and the situations in which such learning takes place are so varied that it is difficult to explain and still more difficult to judge what forms 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 indefinite needs of its native speakers, English is a language in which some of important works in science, technology, and other fields are being produced, and not always by native speakers. It is widely used for such purposes as meteorological and airport communications, international conferences, and the spread of information over the radio and television networks of many nations. It is a language of wider communication for a number of developing countries, especially former British colonies. Many of these countries have multilingual populations and need a language for internal communication in such matters as government, commerce, industry, law and education as well as for international communication and for entrance to the scientific and technological developments in the West.

According to the passage, what is the main reason for the widespread use of English（）

A. It was popular during Shakespeare’s time.

B. It is used in former British colonies.

C. It serves the needs of its native speakers.

D. It is a world language that is used for international communication.

肺血栓栓塞症与冠心病相鉴别时，后者自身的特点有（）

A.心电图有心肌缺血的表现

B.心脏听诊P2>A2

C.心肌梗死时心电图和心肌酶有相应的特征性动态变化

D.超声心动图可有"荡击波征"

E.冠脉造影可见冠状动脉硬化、管腔阻塞的证据