常用于O/W型乳剂型基质的乳化剂是A．硬脂酸钙B．羊毛脂C．月桂醇硫酸钠D．十八醇E
题型：单项选择题
问题：
常用于O/W型乳剂型基质的乳化剂是
A．硬脂酸钙
B．羊毛脂
C．月桂醇硫酸钠
D．十八醇
E．单硬脂酸甘油酯
题型：单项选择题
London has already hosted the Olympics twice before and the 2012 Olympics will make it the first city in history to have held three Olympic games．
The first London Olympics in 1908
These games were going to be held in Rome but, because of a volcano, Rome wasn't ready．London agreed to stage the games and the White City Olympic Stadium was built in just 10 months．What was new at these Olympics was the opening ceremony where athletes paraded（列队行进） with their teams behind their national flags．Only 22 countries took part and the profits were just over ￡21,000!
The second London Olympics
Because of the Second World War, the 1944 Olympics were cancelled．Four years later the war was over and London was able to hold the Games in 1948．Things were very different in London during these Olympic Games and many years of war had left the UK poor and hungry．People called them the "Austerity Games"．But there were still some great sports and some exciting events!
59 countries took part, more than at any other Olympics before and the USA won the most medals with 84．For the first time, cameras filmed the games and broadcast them on television so that people could watch them in their own homes．
The third London Olympics in 2012
The Games this year are going to be bigger, better and more exciting than ever before． There will be more than 10,000 athletes from 204 countries taking part!
London wants to make sure that the benefits of the Olympics don't just last for a few weeks in summer but go on much longer．The buildings have been designed and constructed so that they can be used for different things when the Games are over．
小题1:The text is mainly about _____．
A．London will host the Olympics again
B．London's Olympic history
C．London's Olympics will last much longer
D．London is ready for the Olympics小题2:London hosted the Olympics in 1908 instead of Rome because _____．
A．London could build a stadium in 10 months
B．only 22 countries took part
C．there was a volcano eruption in Rome
D．London could make more profits than Rome小题3:The second London Olympic Games were called the "Austerity Games" because _____．
A．the UK were poor and hungry then
B．there were some great sports
C．the previous Olympic Games was jcancelled
D．about 59 countries took part小题4:The underlined word "them" refers to _____．
A．the 59 countries
B．the 84 gold medals
C．all the athletes
D．the games小题5:According to the text, we know that _____．
A．the benefits of the Olympics used to last for months afterwards
B．the 2nd London Olympics attracted more countries than any other Olympics
C．the buildings for the 3rd London Olympics have more functions for future use
D．the 2nd London Olympics were cancelled because of the Second World War