对常用的水基压裂液稠化剂，比较常用的交联剂有硼砂、有机钛或锆、（）。A、过硫酸钾 B

护士给10个月患先天性巨结肠患儿用等渗盐水灌肠时，其溶液的需要量为（）

A.50ml

B.100ml

C.150ml

D.200ml

E.250ml

Louis Pasteur, the famous French chemist and bacteriologist(微生物学家), invented “pasteurization”. In 1854 Pasteur was made head of the department of science at the University of Lille, and it was there that he made one of his most famous discoveries. Lille was a major center for wine and beer-making, and some of the local wine-makers asked Pasteur if he could help solve the problem of keeping wine fresh. At that time, it was believed that food and drinks go “bad” due to a purely chemical process. But during a series of experiments Pasteur proved that tiny living organisms(微生物)caused food and drinks to go bad. In the case of wine and beer the organisms are already present in the form of the various yeasts (酵母) that caused the fermentation(发酵) process. Pasteur discovered that heating the wine gently for a few minutes after it had fermented would kill off the yeast that was left in the wine, with the result that the wine would remain fresh for much longer. He also proved that food and drinks could be turned bad by other organisms that were present in the air, and that they too would keep fresh much longer if they were kept in airtight containers.

The heating process was so successful that it made Pasteur famous. It was named “pasteurization” in his honour, and by about 1900 it had been widely used for processing and bottling cows’ milk. The result was a huge drop in the number of bottle-fed babies dying from infant diarrhea(婴儿腹泻)and from that time on it has been a standard treatment for milk and many other food products. This simple process has saved thousands, possibly millions, of lives worldwide.

小题1:Pasteur became ___________ in 1854.

A．the chairperson of the science department at the University of Lille

B．the director of a chemical laboratory at the University of Lille

C．the general manager of a large beer-making company

D．the president of the University of Lille小题2:According to the passage, Lille was a major center for ___________ in the mid-19th century.

A．growing grain crops

B．making beer and wine

C．doing chemical research

D．producing various kinds of yeasts小题3:In the last sentence of Paragraph 1, the underlined word “they” refers to ___________.

A．wine and beer

B．food and drinks

C．the various yeasts

D．other organisms小题4:We can infer from the passage that Pasteur’s discovery __________.

A．is no longer widely used for treating milk and other food products

B．did not bring much profit to the wine makers in Lille

C．has done a lot of good to children in the world

D．has greatly reduced the number of wars in the world小题5:According to the passage, we know it is        that causes food and drinks to go bad.

A．a purely chemical process.

B．tiny living organisms(微生物)

C．keeping them in airtight containers.

D．the heating process

掘的遗址实物是研究历史的第一手资料。最．能证明“中国是水稻的故乡”的遗址是（）。

A.北京周口店遗址

B.河姆渡遗址

C.半坡遗址

D.大汶口遗址

在亲密关系中，从来不争吵发脾气的人，可能积累了更多负面情绪。

最有利于脑外肿瘤定位的CT表现为（）

A.边界不清楚

B.脑皮层受压内移

C.肿瘤明显强化

D.中线移位

E.颅骨变薄