大量脂肪栓塞，引起患者最严重的后果是（） A.动脉系统栓塞 B.分解产物引起中毒 C

Today Newtown is a clean place, but many years ago there were millions of rats there. The rats even attacked (攻击 ) the cats and dogs. Sometimes many of them tried to bite men or women at night. The rats were very large in size and they harmed (伤害 ) many people.

The city office ordered every one to kill rats. However, most people were lazy, so they did not kill many rats. The city office could do nothing with the citizens and could do nothing with the rats, either. Some time later, they had to pay some money for each dead rat. That made the people very happy. They at once began to kill rats. They got as many dead rats as they could. And some of them even stopped their own work to kill rats because they could get more pay. Every day a city official(官员 ) put all the dead rats together. He was very busy doing that, because sometimes a man brought hundreds of them in one day. Two weeks later, there were not so many rats in the city as before,  but people still brought many dead rats to the city office. The city officials felt surprised at this but at last they found out people were stealing the dead rats they had collected. So the city official had to order his men to dig a big hole and put the dead rats in it. Soon there were no more rats and the city did not have to pay any more money for that.

小题1:The rats in Newtown were once ______

A．as big as cats

B．as dangerous as dogs

C．huge in size

D．run into cars there小题2:When the city office first ordered the citizens to kill rats, most people ______.

A．had to pay for each dead rat

B．stole dead rats

C．were too lazy to kill rats

D．killed nearly all the rats very soon小题3:A big hole was dug so that ______.

A．the rats could come out to attack people at night

B．people could take many rats

C．the people loved dead rats

D．people could not steal dead rats for money

已知{a_n}为等差数列，a₃+a₈=22，a₆=7，则a₅=（    ）。

两个数的公倍数的个数是无限的。[ ]

下列有关乳糜尿的叙述，错误的是（）。

A.是由于淋巴管破裂致乳糜流入尿中引起

B.加入乙醚充分震荡后，浑浊程度明显减轻

C.离心后上清液可澄清

D.苏丹Ⅲ染液染色后，镜下可见大小不等的橘 * * 形小体

E.常见于丝虫病

为减小基牙的负担，桥体设计时应考虑（）

A.降低桥体牙尖斜度

B.降低桥体面高度

C.采用金属与树脂材料

D.设计悬空龈面形态

E.尽量扩大锥间隙