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“厄尔尼诺”一词来源于西班牙语，原意为“圣婴”。在19世纪初，由在南美洲的厄瓜多尔、秘鲁等西班牙语系国家的渔民们发现的一种气候现象并命名，后来，在科学上此词语用于表示在秘鲁和厄瓜多尔附近几千公里的东太平洋为主的海面温度的异常增暖现象。下面关于“厄尔尼诺”的描述不正确的是（）。
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Chinese colleges have begun organizing summer-vacation internship programs that provide paying jobs for undergraduates. While such programs can equip students with valuable work experience, they also come with potential risks. Last week, a student intern reportedly committed suicide at Chimei Innolux Company in Foshan, a branch company of Hon Hai Precision Industry, which also owns Foxconn. The 18-year-old, surnamed Liu, was a student at Shijiazhuang oriental Technology Polytechnic School. He had been working under a school-company program as a summer-vacation intern for only two days. "We usually consider it a good thing for schools to organize part-time work for students during summer vacation," said Zheng Xiao, a human resources consultant, at ChinaHR. "Through these programs, employers can save costs, schools can gain a reputation for being able to guarantee internship opportunities for students, and students get pay and experience." Diao Lan, 19, a freshman tourism major at Liuzhou Rongshui Polytechnic, says he’s pleased with his school’s summer work program. "The school help us bargain with the company and win us benefits, like free meals and dorms," said Diao, a summer intern at an electronics company in Dongguan. "The school hires buses to send us directly to the company, and I have a strong sense of security since I am with classmates and teachers." But every school-company program is different, and some of them are not that reliable. Zheng warns that some schools are not able to control how much their students are paid and worked, and how secure they feel at the company facilities. For example, to meet order deadlines, many companies require staff to work overtime. Du Yue, a 20-year-old accounting major at Shantou Polytechnic, part-timed at a toy company in Chenghai, Guangdong with other 94 students last summer. "We signed a very simple agreement with the school, promising that we would be on good behavior during the internship," said Du. "The school then arranged work for everyone on the production line--it didn’t matter what our major was." He was paid 2,000 yuan for his one-and-a-half months of work, but it left him feeling exhausted. "It was common to stay on the production line for 10 hours a day. The order had a deadline so tight that we took only one day off every two weeks," Du recalled. "And the company did not provide earplugs for the interns, so we had to bear the noise from the machines." Du and his classmates complained to their teachers, but the situation didn’t change. The contract between the school and the employer was ambiguous, so students couldn’t find a way to protect their rights. That the contract between the school and the employer was ambiguous shows ______.
自牙颈部牙骨质，向牙冠方向散开，广泛存在于牙龈固有层，牵引牙龈与牙齿紧密结合
Every government reform concerning taxes or fees in recent years has given rise to fierce debate in the media and on the Internet. The latest proposed reform of vehicle tax is no exception. The National People’s Congress reviewed proposals on vehicle tax late October. Tax would be based on emissions, or engine size, according to the bill. It suggested raising tax on all vehicles with engines bigger than 1.6 liters. This would mean most car owners would have to pay more once the bill becomes law. Xinhua News Agency has led criticism of the bill. It has published three articles quoting experts questioning the motives and effectiveness of the proposed tax hike. Officials from the Ministry of Finance have said that the tax rise is aimed at encouraging the use of smaller, less-polluting automobiles. They also say that it aims to redistribute wealth. Some support the proposals for they believe by collecting more tax from rich people, the reform could redistribute wealth to some degree. Firstly, if taxes-for large, luxury vehicles increase dramatically but remain the same or lower for smaller vehicles, then naturally people would start buying smaller cars. This helps reduce automobile emissions and leads to a cleaner environment. Secondly, the additional tax revenue could be used to improve benefits for people on lower incomes, to create more jobs and to provide .better education for children from poorer families. This would help them have a better future and would redistribute wealth in society. Finally, automobile consumption in China, especially in large cities, is getting out of hand. Too many cars create serious problems such as pollution, traffic congestion and accidents. Something has to be done to control the number of cars. Heavier taxes would be very effective. Other people disagree with the proposals, for they think that it seems as though the only aim to the tax reform is to increase income for the government. For the first place, compared with the serious wealth gap in Chinese society today, the amount of tax collected on vehicles will make almost no difference in terms of distribution of wealth. Billionaires can buy as many luxury cars as they want but poor people still can’t afford the smallest of cars. Secondly, the majority of privately-owned vehicles in China are in the 1.6 to 2 liter range. This is the most common and economical size for a family car, and is much less polluting than luxury vehicles. However, the new law would almost double the tax levied on these cars. This would not encourage people to buy smaller cars. Finally, the new law does not state where and how the additional tax income from vehicle taxes would be used. We don’t know if the funds will be used to improve benefits for lower-income people, or for other social causes. The author doesn’t think the tax reform will necessarily redistribute the wealth in the society. Which of the following is NOT his reason
(三)阅读下面短文，回答下列五题。1946年诞生的世界上第一台计算机，体积达90多立方米，重30多吨。后来有了半导体，造出了超大规模集成电路，使电子计算机体积大大减小了。但这种集成电路小型化已接近极限，要在这基础上提高其存储和运算速度也越来越难。由于计算机最基本构件是开关元件，于是专家们设想，假若有机物分子也具备“开”“关”功能，岂不可以造出“有机物计算机”吗后来，科学家发现，半醌类有机化合物分子及蛋白质分子中的氢都具备“开”“关”这两种电态功能。因此，从理论上说，只要用半醌类有机化合物分子或蛋白质分子作元件，就能制造出“半醌型”或“蛋白质型”的计算机。人们把它们称为“生物计算机”或“分子计算机”。生物计算机具有“半永久性”。它有许多优点：一是密集度可达现在集成电路的10万倍；二是运算速度可达半导体开关件的1000倍以上；三是这种由生物分子构成的“生物芯片”也同一般生物一样，具有“自我修复”功能，出了故障可“自我修复”，所以这种生物计算机可靠性高，经久耐用；四是生物元件是用化学能工作，所需能量甚少，不存在元件发热问题。生物计算机的研制始于20世纪60～70年代。美国1983年11月召开了专门学术会议，对生物计算机的研制从理论到实践进行了深入探讨。 日本此项研究由“未来电子仪器科研协会”和通产省指导进行。英国也拨款3000万英镑用于生物计算机的研究开发。目前，生物计算机的研制处于初始阶段，专家们预计，下世纪初叶，可望有突破性进展，并使数字电子计算机产生新的功能。无疑，生物计算机一旦问世，将是计算机科学领域的一次新的革命。 文章第二自然段的“从理论上说”的意思是（）。
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