(Question)
Read the article and select the best answer. Article: When you cut your skin, you bleed . If a person loses a lot of blood, he will become ill and may die. Blood is very important. People have always known that. At one time, some people even drank blood to make them strong! When doctors understand how blood goes around inside the body, they try ways of giving blood to people who need it. They take blood from the healthy people and give it to people who need it. This is called "blood transfusion". The blood goes from the arm of the healthy person into the arm of the sick person. But there are two problems. First, it does not always work. Sometimes people die when they have blood transfusion. Later, doctors find that we do not all have the same kind of blood. There are four groups--O, A, B and AB. We all have blood of one of these groups. They also find that they can give any kind of blood to people of group AB. But they find that they must give A-group blood to A-group people and B-group blood to B-group people. I have O-group blood and the doctor told me that I could give blood to anyone else safely. ks5u There is another problem. To give blood of the right kind, doctors have to find a person of the right blood group. Often they can not find a person in time. If they have a way to keep the blood until someone needs it, they can always have the right kind of blood. At first they find they can keep it in bottles for fifteen to twenty days. They do this by making it very cold. Then they find how to keep it longer. In the end they find a way of keeping blood for a very long time. We call a place where we keep money a "bank". We call a place where we keep blood a "blood bank". One day, when you grow up, you may decide to give blood to a "blood bank". In this way you may stop someone from dying. Or perhaps one day you may become ill. You may need blood. The "blood bank" will give it to you. Question: From the passage, we learn that sometimes people die when they have blood transfusions because they _ Options: A: are unhealthy people B: have lost a lot of blood C: are not given the right kind of blood D: are AB-group people
(Answer)
C

(Question)
Read the article and select the best answer. Article: Internet reports of whales sounding like people are not new. But in this case in San Diego, California, scientists for the first time recorded the utterances, did an acoustic analysis and were surprised to find a rhythm similar to that of human speech, Sam Ridgway of the National Marine Mammal Foundation reported on Monday. The sounds marking is quite special : Whales make sounds through the system of the nose, unlike people, who use their throat. So this particular with whale had to make some tricky muscular and blowhole adjustments. "Such obvious effort suggests motivation for relatin", said Ridway, the main author of a study featured in the journal Current Biology. "The sounds we heard were clearly an example of vocal learning by the white whale." The wale, named Noc, died five years ago. Ridgway says that back in 1984, he and others started hearing sounds near the whale and dolphin enclosure that recalled two people speaking in the distance, too far away to be understood. The sounds were later traced to one particular white whale when a diver in its tank came to the surface because he thought he heard colleagues tell him to do so. Noc had lived among dolphins and other white whales and had often been in the presence of humans. The whale made human-like sounds for around four years until it reached the age of sexual maturity, Ridgway said. Question: It can be inferred from the text that _ . Options: A: whales and dolphins like helping humans B: whales might inntate human voice C: man paid attention to whales 100 years ago D: whales will be able to communicate with humans
(Answer)
B

(Question)
Read the article and select the best answer. Article: prefix = st1 /Indonesiais known as the country of islands. It has 17,508. But in recent years, the popular tourist destination has lost some of its shine. Due to rising sea levels caused by global warming, 24 Indonesian islands have gone under the sea. Scientists say 2,000 more will disappear before 2030. In the past three years, the southeast Asian nation also witnessed its islands destroyed by a tsunami and typhoons. "If no measures are taken to fight climate change, the beautiful islands will go forever." scientists told environmental ministers from about 190 countries at a UN climate change meeting. This week they are meeting in Bali, an Indonesian islands. They are trying to reach a deal to cut the world's emissions of CO2, which makes the earth warmer. Indonesia is not alone. This year has been more _ hit the world.Canadaand US suffered heavy storms and typhoons, While Australians were caught in the heaviest drought in a century. In China, the average temperature this year went up by 1.2degC from last year, reaching the highest on record since 1951. From Jiangxi and Hunan in the south to Heilongjiang andJilinin the northeast , one -third of farmland has suffered from a drought. However, other parts of the country got too much rain. More than 700 people were killed in floods, landslides and storms. "These weather extreme are the more obvious effects of global warming," said Song Lianchun, a climate expert. Scientists say time is running out. To escape from the worst effects, global CO2 emissions need to be cut from the levels they were at in 2000 by 50 to 85 percent by 2050. But in recent years climate change talks have been bogged down by arguments over who will pay the bill for cleaner technology. Developing countries are worried that the cut in emissions will slow their economic development. "Chinawill play a responsible and constructive role in the meeting," said Chinese Premier Wen Jiabao. The nation is now the world's second largest greenhouse gas emitter ."However, developed... Question: What is China's attitude towards dealing with problems of climate change? Options: A: China will pay for the cleaner technology. B: China will take an active part in dealing with climate change. C: Chinathink it is developed nations' responsibility to deal with climate change. D: Chinawill depend on developed nations to help it to solve climate change.
(Answer)
B