临床上最常见的胎先露的胎方位是（） A.头先露 B.臀先露 C.枕左前位

X线照片影像质量评价，目前进入一新领域的是（）

A.视觉评价

B.主观评价

C.客观评价

D.综合评价

E.数学评价

The security rationale is very important for any scientific or technological endeavor because the budget of security- related programs is limited usually by that nation's comprehension of a hazard or redefine the idea of national security.

A．perception

B．reason

C．passion

D．reaction

癫痫的病位在心肝脾肺四脏。

The story of English language is a story of change．The old English language, or old English, is quite different from Modern English．If we do not study old English, we can’t understand it．Some of the words are the same, but many are not used now．The story of the English language begins some time after the year 400 AD．At this time, some people came to England from North-west Europe．There were many groups of people．They were called Angles （盎格鲁人）, Saxons（撒克逊人）and Jutes（朱特人），whose language, old English, is like some of the modern language of North-West Europe．In old English, the ending had many meanings．They showed past time and present time and many other things．In Modern English, most of these endings are gone．This is the biggest difference between Old and Modern English．

小题1:What does the first sentence of the passage mean?

A．The story of English language often changes．

B．English is a language that has changed a lot as time passes by．

C．The old English language has changed into Modern English．

D．The story of English language is one of how people change the language．小题2:Old English has a story of ______．

A．2,500 years

B．more than 1,600 years

C．2,300 years

D．more than 400 years小题3:Old English was first used by the people from ______．

A．Old English

B．English

C．North-West English

D．North-West Europe小题4:Which of the following is NOT true about Old English?

A．The endings of words gave different special meanings．

B．It is easy for most English-speakers today to understand the language．

C．Its words are very different from those Modern English．

D．It was spoken by many groups of the people from North-West Europe．

导频制立体声广播中导频信号的频率是（）KH_Z。

A.19

B.38

C.47

D.53