问题 单项选择题

C5()

A.补体经典激活途径的固有成分

B.补体旁路激活途径的固有成分

C.补体三条激活途径的共同成分

D.补体旁路途径激活物

E.补体经典途径激活物

答案

参考答案:C

解析:补体三条激活途径的具体转化过程(经典途径、MBL途径和替代途径)。

听力题

阅读短文,根据短文内容及首字母提示,在空白处填入一个适当的单词

Coober Pedy is a small town in the Australian desert (沙漠). It’s famous not only for its opals (猫眼石) , but also for a very unusual小题1: r________—the people live and work underground.

Why do people choose to live under the ground? To avoid (避开) the小题2:h_______ days and cold nights-daytime temperatures can rise to 50 °C or more and on a cold night they can fall to 小题3:z_______. The locals say that their strange lifestyle is the only answer小题4:t________ the unpleasant climate (气候) . In the underground homes, the temperature is always a very pleasant 19°C to 24°C .But that’s not the only advantage ; the people there don’t need to pay builders if 小题5: t_______want to build a home or make any changes.

You would be very surprised to see 小题6: h________well people manage to live underground. They have modern kitchens and bathrooms, sometimes even spas (温泉)“People think it’s impossible to live here and that we’re like ancient people, 小题7:b_______ that’s not true. " says Bev Smith, who has lived in Coober Pedy for over 30 years. When my husband, Larry, and I first came here, life was very 小题8:d _______ and many people decided to leave. But now, things have 小题9:c________a lot and we’re very comfortable. We now have underground shops, hotels, restaurants, cafes and churches!”

Abigail and Brian Tynan 小题10: 1_______ their large house in Melbourne(墨尔本) two years ago to have in an underground home. "My mouth fell open when I saw my wonderful underground home," remembers Brian. " I really enjoy living here. "

单项选择题