女性，18岁，右颈部淋巴结肿大，低热，乏力，消瘦。淋巴结活检的组织象是大片凝固性坏死

阅读理解。

     There are many kinds of tigers all over the world, and the largest kind is Northeast Tigers (东北虎).

 Most Northeast Tigers live in the northeast of China, such as Heilongjiang Province and Jilin Province.

 There are many forests and mountains, and the tigers usually like living there. In the forests and mountains,

  there are fewer people getting out and coming in. So the tigers are very free. They run after each other,

  catch and eat some small animals like rabbits and deer (鹿).

     Northeast Tigers are different from other tigers. For example, Northeast Tigers can swim very well, but

  they can't climb trees. Northeast Tigers' hearing is good and they can hear very low sounds.

     Now the number of Northeast Tigers becomes smaller and smaller. We should try our best to protect

 them.

1. Most Northeast Tigers enjoy living in _____.

    A. mountains

    B. forests

    C. mountains and forests

    D. animal zoos

2. Northeast Tigers like living in the northeast of China because _____.

    A. they can be very free

    B. they can find food easily

    C. there are no tigers in the south

    D. it is beautiful there

3. Which of the following is NOT true?

    A. Northeast Tigers are the largest tigers in the world.

    B. Northeast Tigers can swim and climb trees very well.

    C. Now Northeast Tigers are becoming fewer and fewer.

    D. Northeast Tigers can hear low sounds.

4. What do you think we should do to protect Northeast Tigers?

    A. Give them enough food.

    B. Keep them in the zoo.

    C. Protect their living place.

    D. Make friends with them.

5. The best title of this passage is _____.

    A. Kinds of Tigers

    B. Tigers in China

    C. How to Protect Northeast Tigers

    D. Northeast Tigers

元件转矩平衡是保证感应式三相三线电能表在正、逆相序接线时，误差相同的（）。

A.必要条件

B.充分条件

C.充分必要条件

D.充分非必要条件

变异性心绞痛（）

A.冠状动脉痉挛

B.冠状动脉内完全闭塞性血栓形成

C.冠状动脉斑块破裂不完全血栓形成

D.冠状动脉粥样硬化狭窄>99%

E.冠状动脉粥样硬化狭窄>90%

关于房扑的临床表现，不正确的是（）

A.可转变成窦性心律

B.可转变成房颤

C.患者可无症状

D.是心跳骤停的前兆

E.可诱发心绞痛

轴温升高有哪几种主要原因？如何调整？