(1)已知:a2-ab=6,ab-b2=2,求a2-2ab+b2,a2-b2的值

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问题:

(1)已知:a2-ab=6,ab-b2=2,求a2-2ab+b2,a2-b2的值;

(2)已知2x-y=5,求5(y-2x)2-3y+6x-60的值。

考点:代数式的求值
题型:解答题

阅读短文并回答问题。

     The U.S. is one of the English-speaking countries in the world. In the U. S., people speak English. People

in the UK, Australia, Canada and New Zealand also speak English. But American English is different from the

English in the UK, or in Australia, for example, to say "去看电影", people in the U. S. say "to go to the movie

theater", while people in the UK say,"to go to the cinema." To say "裤子", people in the U.S. use pants.While

people in the UK say "trousers." American people say "sure" while people in the UK say "of course".

1. What are the English-speaking countries?

                                                                                                                                   

2. What language do the people in New Zealand speak? 

                                                                                                                                   

3. To say "去看电影", what do the people in the UK, say?

                                                                                                                                   

4. To say "裤子", what do the people in the US say?

                                                                                                                                   

5. When an American boy meets a boy from the UK, do they understand each other?

                                                                                                                                   

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1912年,孙中山感叹到:“此次革命事业,数十年间屡仆屡起,而卒观成于今日者,实报纸鼓吹之力。”此处的“报纸”主要是指[ ]

A.《时务报》

B.《民报》

C.《新青年》

D.《国闻报》

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颈外动脉的体表投影()

A.自胸锁关节至甲状软骨上缘

B.自甲状软骨上缘至耳垂

C.自甲状软骨上缘沿胸锁乳突肌前缘至乳突与下颌角之间中点连线

D.自甲状软骨下缘沿胸锁乳突肌前缘至乳突与下颌角之间中点连线

E.自舌骨平面至胸锁乳突肌前缘至乳突与下颌角之间中点连线

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小麦依靠种子繁殖,葡萄通常采用扦插、嫁接来繁殖,它们的生死方式分别属于(  )

A.有性生殖、有性生殖

B.无性生殖、无性生殖

C.有性生殖、无性生殖

D.无性生殖、有性生殖

题型:解答题

钡餐检查,病理性胃形态为()

A.牛角形

B.瀑布胃

C.葫芦形

D.鱼钩形

E.无力型

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