Question: Read the following article and answer the question. Article: There are many commonly held beliefs about eye glasses and eyesight that are not proven facts. For instance, some people believe that wearing glasses too soon weakens the eyes. But there is no evidence to show that the structure of eyes is changed by wearing glasses at a young age. Wearing the wrong glasses, however, can prove harmful. Studies show that for adults there is no danger, but children can develop loss of vision if they have glasses inappropriate for their eyes. We have all heard some of the common myths about how eyesight gets bad. Most people believe that reading in dim light causes poor eyesight, but that is untrue. Too little light makes the eyes work harder, so they do get tired and strained. Eyestrain also results from reading a lot, reading in bed, and watching too much television. However, although eyestrain may cause some pain or headaches, it does not permanently damage eyesight. Another myth about eyes is that they can be replaced, or transferred from one person to another. They are close to one million nerve fibers that connect the eyeball to the brain, so it is impossible to attach them all in a new person. Only certain parts of the eye can be replaced. But if we keep clearing up the myths and learning more about the eyes, some day a full transplant may be possible. Question: If a child wears appropriate glasses, _ . Answer:
OPTIONS:
- the structure of his eyes will keep the same as before
- it is harmful
- the structure of his eyes will be changed
- he will lose sight
Answer: the structure of his eyes will keep the same as before

Question: Read the following article and answer the question. Article: Twenty courses provided by 18 top Chinese universities went online on Wednesday, China's latest attempt to disseminate teaching resources within the nation and promote Chinese culture globally. These courses cover 20 subjects or lectures given by speakers and professors from several universities, including Zhejiang University, Nankai University and Wuhan University.Most of the courses will focus on traditional Chinese culture, according to the Ministry of Education. They are available through the websites of NetEase and China Network Television, as well as icourse.edu.cn, for free. Some of the courses will be translated into English and promoted across the rest of the world, according to NetEase Company, an international body promoting open content among the world's universities. The company has set up a translation team and "will kick off the translation work when we finish the negotiation on intellectual rights with universities", said Zhu Xirui, a senior manager for NetEase Company. "We want to promote Chinese culture to overseas netizens through the program," he said. Ding Xiuhong, another manager of NetEase Company, said they had invested more than 15 million yuan($2.37 million)in the program. "Although we haven't made a profit from 'the program, it will at least help increase our website's page views," Ding said. "I'd like to watch the Chinese elite classes, such as Chinese literature and poetry, as well as economy," said Jeremy Scaramuzzi, a teacher at Tsinghua International School. He said he was also interested in Chinese classes on political science since that is the subject he majored in in the United States. Question: According to the passage, people can get access to the courses from _ websites. Answer:
OPTIONS:
- 2.
- 3.
- 4.
- 5.
Answer: 3.

Question: Read the following article and answer the question. Article: Elephants have impressed us for centuries. They are big, clever, and sociable. But what if someone told you that they may also hold the key to fighting cancer? People have been wondering why elephants do not develop cancer, even though they have life spans that are similar to humans, living for around 50 to 70 years. Now scientists believe they know why. A team at the University of Chicago, Us has found that elephants carry a large number of genes that stop tumors from developing. To be precise, they found 20 copies of an anti-tumor gene called TP 53 in elephants. Most other species, humans included, only carry one copy. According to the research, which was recently published on the online science network BioRxiv, the extra copies of the gene improved the animal's sensitivity to DNA damage. This lets the cells quickly kill themselves when damaged before they can form deadly tumors. "An increased risk of developing cancer has stood in the way of the evolution of large body sizes in many animals," study author Dr Vincent Lynch told The Guardian. If every living cell has the same chance of becoming cancerous, large creatures with long life spans like whales and elephants should have a greater risk of developing cancer than humans and mice do. But across species, the risk of cancer does not show a connection with body mass. _ was found by Oxford University scientist Richard Peto in the 1970s and later named "Peto's paradox". Evolutionary biologists believe it results from larger animals using protection that many smaller do not, In the elephant's case, the making of TP53 is nature's way of keeping this species alive. The study also found that when the same genes were brought to life in mice, they had the same cancer resistance as elephants. This means researchers could use the discovery to develop new treatments that can help stop cancers from spreading or even developing in the first place. "Nature has already figured out how to prevent cancer," said Joshua Schiffman, an oncologist at the School of Medicine,... Question: According to Dr. Vincent Lynch, what has been a risk in the evolution of large animals? Answer:
OPTIONS:
- Extreme weather
- Cells killing themselves
- Human behavior
- A risk of deadly tumors
Answer:
A risk of deadly tumors