正确答案: AC

A、无效的民事行为 C、乘人之危的民事行为

题目：李某为给病危的父亲治病急需用款10万元，王某表示愿意借给，但1年后必须加倍偿还，否则以其三居室住房代偿，李某表示同意，此行为属于（）

查看原题 查看所有试题

学习资料的答案和解析：

[单选题]

回答下面的题目：Traffic in Uur CitiesTile volume of traffic in many cities in the world today continuesto expand．This causes many problems，including serious air pollution，lengthydelays，and the greater risk__________ (51)accidents．Clearly，something must be done，but it is often difficult to persuade people to__________ (52)theirhabits and leave their cars at home．One possible__________ (53)is to make it more expensive for peopleto use their cars by__________ (54)charges for parking and__________ (55)tougherfines for anyone who__________ (56)the law．In addition，drivers could be required to pay for using particular routes atdifferent times of the day．This system，__________ (57)as“road pricin9”，is alreadybeing introduced in a__________ (58)of cities，using aspecial electronic card__________ (59)to the windscreen of the car．Another way of__________ (60)with the problem is to provide cheapparking on the__________ (61)of the city，and strictly control the number ofvehicles allowed into the centre．Drivers and their passengersthen use a special bus__________ (62)for the final stage of their journey,Ofcourse．the most important__________ (63)is to providegood public transport．However，toget people to__________ (64)the comfort of their cars，publictransport must be felt to be reliable，convenient andcomfortable，with fares__________ (65)at an acceptablelevel．

outskirts

解析：联系上下文，本句后半段提到“市中心”，再根据句意，可得出前面是说“郊区”，只有outskirts是正确答案，故选D。

[单选题]支气管哮喘患者突然出现胸痛、气急、呼吸困难、大汗、不安，应考虑（）

自发性气胸