简述妊娠合并心脏病病人孕期及分娩期注意事项。

重症肌无力的自身抗原是（）。

A.平滑肌

B.乙酰胆碱受体

C.胰岛素受体

D.细胞核

E.血小板

甲、乙两人在周长为125米的圆池边散步，甲每分钟走8米，乙每分钟走17米，现在从共同的一点反向行走，则第二次相遇在出发后( )分钟。

A．15

B．10

C．32

D．4

It was the last day of July and the long hot summer was drawing to a close As for me．1 was out of spirits，and，if the truth must be told, out of money as well，During the past year I had not managed my finances as carefully as usual；and 1 was now limited to spending the autumn economically between my mother’s cottage at Hampstead and my own in town.

My father had been dead for some years，and my sister and 1 were the sole survivors of a family of five children. My father was a drawing-master before me He had been highly successful in his profession and my mother and sister were left economically independent after his death.

The view of London below me had sunk into the black shadow of the cloudy night, when I stood before the gate of my mother’s cottage I had hardly rung the bell．When the house door was opened violently．My worthy Italian friend，Professor Pesca，appeared in the servant’s place，and rushed out joyously to receive me．

I had first become acquainted(熟悉)with my Italian friend at certain great houses，where he taught Italian and I taught drawing What I then knew of the history of his life was that he had left Italy for political reasons and that he had been respectably established for many years in London as a teacher of languages It once happened that I saved him from certain death by drowning while we

were swimming in the sea at Brighton Afterwards he overwhelmed(淹没)me with the wildest expressions of affection and exclaimed passionately, that he would hold his life at my disposal from then on, and declared that he should never be happy again until he had had the opportunity of proving his gratitude．Little did I think that the occasion to serve me was soon to come．

Pesca dragged me in by both hands into the parlor, where my mother sat by the open window, laughing and fanning herself．Pesca was one of her especial favorites，and his wildest strange acts were always pardonable in her eyes．

“Now, my good dears．”began Pesca．“listen to me The time has come I recite my good news．I speak at last…'Hear, hear!”said my mother, humoring the joke“I go back into my life，and I address myself to the noblest of men，who found me dead at the bottom of the sea，and who pulled me up to the top. What did I say when l got into my own life and my own clothes again? I said that my life belonged to my dear friend，Walter, for the rest of my days Now,”cried the enthusiastic little mall at the top of his voice．“happiness bursts out of me at every pore of my skin．For I have found a job for you”

小题1:The first two paragraphs of the passage serve as an introduction to——

A．the financial situation the writer then faced

B．the season that the story was set in

C．the family members of the writer

D．the successful profession of the writer’s father小题2:The underlined word‘‘sole’’in the second paragraph probably means‘‘         ”

A．main

B．only

C．lucky

D．possible小题3:It can be learned from the passage that Pesca            

A．used to be a politician

B．was a successful drawing-master

C．was quite close to the mother

D．wanted to give the writer some money in return小题4:According to the last paragraph，Pesca was more than happy because                  

A．he went back into his life

B．he met his dear friend again

C．his friend ever saved his life

D．he had done something good for his friend

需求曲线描述了，其他条件不变，市场需求量与价格之间的关系。( )

仅由（）和（）两种元素组成的物质叫做烃。