More than 700 business leaders, government officials and investors gathered in Mountain View, California in December,2012 to attend the Social Innovation（创新）Summit．It is an invitation-only conference aimed at finding new ways to deal with old problems．
Traffic jam is a problem that Bruggemann hopes to solve．“Traffic is really bad in most countries and we thought there must be some way of doing something about it．”Last week, his team, winning the prize for its“nunav”traffic management system, received a Microsoft Imagine Cup Grant of ＄100，000．“Everyone that′s using our system sends his present position as well as the destination to our servers every 30 seconds．And with that information our central system can reroute（调整路线）all of the cars in a way that everyone gets his individual best possible route．”
Bruggemann says early research with the system has been promising．“We found out that it could be possible to save up to 20 percent of the fuel consumption．Even more interesting, it can save up to 50 percent of the time you spend in traffic so you could get to your destination twice as fast．”
Team Cypher256 from Uganda also was invited to the Social Innovation Summit．They developed a device（仪器），called WinSenga, aimed at improving health care for pregnant women in Africa．It measures the early baby′s heart sounds to help test the heart rate, age and position of the baby in the mother．The device is similar in operation to an ultrasound（超声波）test, but is far less costly and very practical in Africa．
This is the third year for the Social Innovation Summit．The event is held twice a year, once in New York and once in California．The first one in 2012 was held in May． The United Nations′Office for Partnerships helped to organize the event．
61．In what way is the“nunav”system special？
A．It can decide destination for users．
B．It sends back information every 30 minutes．
C．Users can earn much money by the system．
D．Users can find the best possible route by the system．
62．The“nunav”system has the following advantages EXCEPT___________．
A．reducing the fuel consumption B．reaching the destination quickly
C．saving the time in the trip D．improving driving skills
63．The device WinSenga is intended to___________．
A．improve the health care for pregnant women
B．promote the heart rate of pregnant women
C．measure the size of the early babies
D．help the operation on women
64．What can be inferred from the text？
A．The“nunav”system is popular in Africa．
B．Common people in Africa can afford to use WinSenga．
C．The United Nations offered financial help to the“nunav”system．
D．The Social Innovation Summit has been held three times so far．
65．What′s the purpose of the text？
A．To tell us a new way out of traffic jam．
B．To introduce a device for women in Africa．
C．To tell us the importance of social innovations．
D．To introduce a conference about social innovations．