Read the article and select the best answer. Article: Range At present,there are five network firms---China Telecom,China Unicom,Jitong Communications,China Netcom and China Mobile---that are allowed to operate IP services in China.Each company has its advantages in service. Charge As the Ministry of Information Industry co-ordinates,the charges of IP calls of the five companies are the same,0.30 yuan per minute for DDD calls.4.80 yuan per minute for IDD calls,2.50 yuan for calls from the mainland to Hong Kong,Macao,and Taiwan,and 1.50 yuan from Shenzhen to HK,Zhongshan and Zhuhai to Macao.IP callers don't enjoy discounts on holidays. China Telecom has the widest coverage.All cities in China with telephone access and most countries in the world are open to China Telecom's IP card. China Unicom's IP card can reach 29 cities nationwide and more than 130 countries and regions worldwide.Jitong IP can access 12 cities in China and over 70 countries and regions worldwide. China Netcom's IP card can reach 14 cities in China and 149 countries and regions in the world. China Mobile's IP card is open to only six cities nationwide but can access more than 200 countries and regions worldwide. Voice quality China Telecom realizes its IP service by the public Intermet,therefore net congestion and voice delay may sometimes disturb conversations.The other four companies have their private data networks,which help to increase transmission speeds and improve voice quality. Other services China Telecom,Jitong and China Mobile offer account transfer services.Users can transfer the remaining sum of money on one card to another card. Jitong and Netcom Link their services with bank cards.One can enjoy IP's service without an IP card.Bank card users can make IP phone calls with their bank card numbers,so they needn't buy new IP cards and remember the new numbers again and again. As for customer service,China Telecom,China Unicom and China Mobile provide free hot line service,while Jitong and Netcom charge for their services. Question: The passage mainly talks about_. Options: A: differences between the five IP fims B: foundation of China's five IP firms C: development of China's five IP firms D: organization of the five IP firms
A

Read the article and select the best answer. Article: Mr. And Mrs. Bell are very forgetful . For example , Mr. Bell sometimes goes to his office for work on Sunday morning, for he thinks it is Monday. And Mrs. Bell sometimes forget to cook supper for the family. One summer they planned to fly to New York for their holidays. They got to the airport only ten minutes before the plane took off. So time was short. But suddenly Mrs. Bell said she must tell Alice, their daughter, not to forget to lock the front door when she went to school. As Alice was then at school, they couldn't tell her about it by telephone. So they hurried to the post office. Mrs. Bell wrote a short note to Alice while Mr. Bell bought a stamp and an envelope . Soon the note was ready. They put the stamp on the envelope in a hurry and dropped it in the letter box, but suddenly Mrs. Bell began to cry. The short note was still in her hand. She had put the plane ticket in the envelope. Question: In a hurry Mrs. Bell _ Options: A: forgot to put the stamp on the envelope B: dropped the stamp in the letter box C: dropped the note in the letter box D: .put the plane tickets in the envelope
D

Q: Read the article and select the best answer. Article: The pilot knew that there was nothing he could do to keep the plane long in the air. So he rushed back to where his passengers sat and explained the dangerous situation. In the end he said, "I'm a married man with two small children. I'm sorry to tell you that there are only three parachutes in the plane." And with that he took up one and jumped out. One of the passengers reacted quickly. "I'm a great statesman !" he said. "I've a very bright brain and the world can't do without me!" And with that he jumped out too. The other two passengers, an old man and a young soldier, were quiet for a moment. "Son," the man said, "I'm old and have lived a full life. I'm ready to meet my God." "You'll have to give up that," the young man said, smiling. "The world's smartest man just jumped out with my backpack." Question: According to the passage, who would be sure to lose his life? Options: A: The pilot. B: The old man. C: The young solider. D: The great statesman.
A: D

(Question)
Read the article and select the best answer. Article: Scientists are debating how to limit their newly-discovered power to change genetic structure. Scientists already modify the genes of farm animals and agricultural plants to make them more productive or stronger. But now they can also change genes in wild animals and plants. These genes would continue into later generations. For example, it may be possible for scientists to remove from existence the kind of mosquitoes that carry the Zika virus. They might also be able to permanently remove species of plants and animals that are destructive to other species. In a report published last week, the U. S. National Academies of Sciences, Engineering and Medicine (NAS) said it supports continued research on this kind of gene control. But it warned that it is not possible to know what will happen when these changed plants and animals are released into the wild. Sixteen biologists, ethicists and policymakers are on an NAS committee that is examining the issue. They say that there is value to the new technology. But, they say, there is not enough evidence to support the release of modified organisms from the laboratory into nature. Many people would support stopping mosquitoes and rats from carrying diseases. But scientists say we must understand the possible scientific, ethical, legal and social results of such action before we decide whether to take it. Gene modification is spread through reproduction . Changed genes will continue to spread as long as an animal or plant continues to reproduce. They cannot be limited to a farm or kept within a country's borders. Scientists are wondering what may happen if a modified organism mates with another species. They are not yet sure how the modified genes would affect the other species. It is possible that those genes could harm those creatures or even lead to their disappearance from our planet. Question: What can be the best title for the passage? Options: A: Stop research on gene control B: How to change genetic structure C: Power and danger of gene control D: Advantages of gene control in wild animals and plants
(Answer)
C