问题 单项选择题

血浆PT时间延长,加入储存血浆、硫酸钡吸附血浆可以纠正,加入储存血清不能纠正,可能缺乏的凝血因子是

A.因子Ⅰ

B.因子Ⅱ

C.因子Ⅴ

D.因子Ⅶ

E.因子Ⅹ

答案

参考答案:A

解析: 硫酸钡吸附血浆中没有Ⅱ、Ⅶ、Ⅸ、Ⅹ;储存血浆中没有Ⅴ、Ⅷ;储存血清中没有Ⅰ、Ⅴ、Ⅷ、Ⅻ。PT时间延长,说明外源性凝血系统凝血因子缺乏,加入储存血浆、硫酸钡吸附血浆可以纠正说明不缺乏Ⅱ、Ⅶ、Ⅴ、Ⅹ。而加入血清不能纠正,说明缺乏因子Ⅰ。

阅读理解

Dogs and cats are not for students who live in the dormitory. Just think about the noise, the smell and all that wild behavior­chewing on whatever they can get their teeth on, or knocking over the trash can. But don't feel sad. There are smaller and less destructive pets to make your dormitory life colorful.

Betta fish

They make great pets with their big personality and astonishing colors, ranging from bright red, dark blue to lemon yellow. Unlike many fish, most bettas react to their owner's presence and become more active when they are nearby, which is unusual in the fish world.

 

Chinchillas

Without bad smell, about the size of a rabbit and with fur so dense that they can't get pests such as fleas(跳蚤), the friendly creature originally from the Andes Mountains in South America makes an ideal indoor pet. Chinchillas are very social animals, so if you only have one, you will become its family. In cold winter days, in a glace at this fury pet in a dorm will bring you a lot of warmth.

Land hermit crabs

 

In a society where owners are often asked “Are they tasty?”, land hermit crabs are among the most unlucky animals commonly kept as pets. But they are easy to care for, inexpensive and fascinating to watch. And the fact that they don't cause any allergic reactions makes them perfect for college dormitories.

Red­eared sliders

If you're interested in a lifelong friend, a red­eared slider makes a wonderful pet. If well cared for, they can live for around 40 years. But there are a couple of things you should know. Red­eared can grow to an adult size of up to 30cm! So you may need a larger tank quickly. In addition, you will need to provide UV lighting, water heater, and a swimming area and a basking (晒太阳) area. Housing a red eared slider is not easy.

小题1:All the dormitory pets mentioned in the text are ________.

A.active and allergic   

B.quiet and peaceful

C.colorful and tasty

D.small and smelly小题2:Which of the following is NOT true about these creatures?

A.Bettas are active and rich in colors.

B.Chinchillas are originally mountain animals.

C.Land hermit crabs are allergic but tasty.

D.Red­eared sliders need more care from the owner.小题3:If you want to keep the pet as long as possible, you'd better choose ________.

A.Betta fish

B.Chinchillas

C.Land hermit crabs

D.Red­eared sliders小题4:The text is mainly to ________.

A.introduce the best way to keep pets

B.offer useful tips for choosing pets

C.inform students of lifestyle of pets

D.recommend some dormitory pets

填空题