More than 700 business leaders, government officials and investors gathered in Mountain View, California in December,2012 to attend the Social Innovation 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 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 ,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 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. 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
A

Tang Zhou and his wife are planning to have their second child, a test-tube baby. His wife had a natural delivery when she was 34 and their first child, a boy, is now 7. The couple are now hoping to have a daughter through _ in the US. "My wife couldn't bear another delivery because of her heart condition and her age. Surrogacy helps avoid the risks to older mothers," Tang said, "Moreover, our second child will be born in the US and become a citizen there. That is not a bad choice." The couple spent weeks researching their move, looking for a reliable agency that provides surrogacy services overseas. Surrogacy is still illegal in many countries, including China. "We will be taking much higher risks by relying on a surrogate mother in China because we are not protected by any regulation or law. You pay a lot of money but may meet with many problems," Tang said. "You might not even get your baby back." Tang and his wife are part of an increasing number of Chinese couples who are turning to surrogacy services. Tang also considered surrogacy in Thailand but dropped the idea after recent reports about a baby with Down Syndrome  who was delivered through surrogacy and said to have been deserted in Thailand by the biological parents from Australia. Instead, Tang chose the California Surrogacy Center agency as his first option after reading the detailed introduction on its website. Compared with many other agencies that he could contact only via e-mail, the center has a consulting office in Beijing, Tang said. The center is in San Diego, California, and has satellite offices in Los Angeles and Beijing. According to Liu, the center has been operating for more than eight years, and about 100 surrogate mothers live in California. "A surrogate mother" refers to a mother who   _  . A) acts as a baby-sitter B) nurses another woman's baby C) offers service to a new mother D) gives birth to a baby for another woman
D

A few years after World II finished, Scientists spoke with great eagerness about the use of nuclear  as source of energy. Within twenty years, they said, nuclear would take the place of coal, gas and oil as a source of power at home and in industry. This promise has never been carried out and there are serious doubts that it ever will be. Nuclear power plants are used to produce energy in some wealthier countries, but the cost is high. Although safety measures have been taken, radiation leaks  have taken place and workers have been killed or affected. The problem of getting rid of the nuclear waste has proved most difficult. There is a limit to the mount of waste materials which can be buried in the ground or poured in the seabed. These methods may also cause more problems. Waste materials polluted by radiation may remain dangerous for 200 years or more. It has no surprise that scientists have turned to the sun and the sea as sources of power. The sun shines day after day almost wastefully, providing us with energy far beyond all our earth. Which of the following statements is true? A) It's impossible to get rid of nuclear waste B) Most of the nuclear water can be stored safely. C) Not all nuclear waste can be got rid of. D) Nuclear waste can be replaced and reused easily.
C

The accident at Lake Sherwood was in our backyard. An SUV had gone off the road,down a hill, and collided with a tree. When we heard the wreck, I remembered to say "call 911". My family was the first on the scene. Nick, my son, was on the cell phone with 911. He saw a friend who was a victim in the crash who was a 15 years old girl who was badly disfigured and had died instantly. It was a terrible scene. There had been six people in the truck, all between 15 and 17 years old. My husband and I checked all the victims, and I picked one who was conscious and stayed with him. I talked with him and had him lay on the ground. When I asked him if he was hurt, he said he was sore all over. When help arrived, they asked me to stay and continue working with them. I did as Debbie Romine, .my instructor, said in class, and did what they wanted. They even said thank you before they left. The sheriff deputies came by Saturday night to get our statements and play the 911 tape back, so Nick could identify all the voices in the background. They said over and over that the way he handled the call was the best they had heard in a long time. He was calm and worked with them even when he saw his friend who had died. The Sheriff's Department is sending some people over to help us work through our emotions. The first aid and CPR course I took in January really helped me. I just didn't expect to put it to good use so soon.                                        Pennyd. Miller                                  Kansas State Dept of Education,Topeka Why did the Sheriff deputies come by Saturday night? A) To arrest the offender. B) To offer them help. C) To get their statements. D) To help them.

C