Write a multi-choice question for the following article: Article: It took 100 years, but finally, scientists proved Albert Einstein's theory that gravitational waves exist. The waves were predicted as part of Einstein's general theory of relativity nearly 100 years ago. It was the theory of the physics behind the workings of our world and the universe. The idea was that the waves are like ripples in space, caused by some of the violent and energetic processes in the universe. For example, two black holes crashing into each other. Now a group of scientists, including ones from Caltech, MIT and the LIGO Scientific, Collaboration finally found the gravitational waves. David Reitze is the executive director of the LIGO observatory at Caltech. "We have detected gravitational waves. We did it!" What are these gravitational waves? Well, imagine throwing a rock into a pond. When the rock hits the flat surface of the water, it creates ripples or waves. Space-time is like the surface of the water. So that means gravitational waves are like the ripples moving out from where the rock hits the water. It might be hard to understand, but those gravitational waves expand and contract space and time as they move through space. And when they get to the Earth, the waves pass through, and they contract and expand the planet as the waves go by. It was Einstein who said these gravitational waves should be observable. But these are not huge waves. They are very, very small, which is why it took so long to find them. You cannot see them with your eyes. They are smaller than the size of an atom. How did the scientists find them? They used a giant scientific tool called LIGO, which stands for the Laser Interferometer Gravitational-Wave Observatory. The billion-dollar LIGO project is two L-shaped observatories. One is in Louisiana and the other in Washington state. For years, scientists have been watching two black holes in another faraway galaxy. The two were spinning around each other, moving closer and closer together. When they finally crashed into each other, it was with such power and force...
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Answer: Question: With the discovery of gravitational waves, we'll _ .Options:A create a new worldB make full use of gravitational wavesC view the universe in a new wayD avoid being hit by black holesAnswer:C

Q: Write a multi-choice question for the following article: Article: Chinese officials yesterday urged employers to take more measures to protect workers against workplace diseases and injuries. Experts estimate that about 200 million workers face a potential danger of occupational diseases and work-related injuries. The majority of them are farmers-turned-workers who are working in small or medium-sized firms. One of the most serious workplace diseases on the Chinese mainland is pneumoconiosis, a lung disease that is caused by breathing in too much dust of coal, silicon, and cerement. It causes serious breathing difficulties and can be fatal . The disease killed 966 people in the country last year, according to an official report released by the Ministry of Health yesterday. From the early 1950s until the end of last year, 607,570 people were diagnosed with pneumoconiosis. Among the number, 137,481 people died from the disease. Chen Xiaohong, vice minister of health, said the general level of prevention and control of workplace diseases is still quite low in China. "Health authorities at various levels will do more education work in the future to raise employers' awareness that they are the first person responsible for any workplace diseases or accidents," Chen said. He made the remark at a ceremony held by his ministry and other relevant departments under the State Council to award prizes to 56 companies which have done well in protecting workers' health. On the Chinese mainland, more than 16 million companies are engaged in potentially dangerous sectors, such as coal mining, construction, and those that use chemicals, according to the Ministry of Health. Although many companies, especially large foreign-invested and State-owned ones, have done well in protecting workers' health, many employees are still working in dangerous places with poor protection and without any insurance support. At least 90 per cent of Chinese companies are small or medium-sized organizations. Many of these companies, especially private ones based in towns and villages, do not want to spend their...
A: Question: From the passage we can see that _ .Options:A 200 million workers suffer from workplace diseases and injuriesB about 23% of Chinese workers once died from pneumoconiosis during about 55 years.C less than 12 million farmers-turned-workers have medical or injury insurance.D 50% of the companies have done well in protecting workers' health.Answer:B

Question: Write a multi-choice question for the following article: Article: There are no days when men and women couldn't associate with each other. When we are asked if boys and girls can associate with each other, most of us will say, "Yes, of course. Why not? " If we want to deal with the association between boys and girls properly, here are some tips for you to follow. 1)Keep a normal and healthy state of mind . Our schools and classes are made up of boys and girls. It is very natural for the boys and girls to contact each other and build up the friendship with the students of the other sex. Generally speaking, we should broaden the circle of the association. We should make as many friends as possible. We should have more friends of the other sex instead of one or two. We should contact the students in public, not in secret. 2)Contact students of the other sex warmly, generously and sincerely. Don't be too nervous or too shy in contact with a person of the other sex, because no one likes a person who is too shy to say a word. 3)Don't fall into the ditch of early love. The boys and the girls at adolescence are rich in feelings and full of imagination . They are easy to regard the friendship as a sign of love and fall in love with each other at an early age. In my opinion, early love is a green apple that can't be eaten. An apple won't taste sweet until it is fully ripe . Do keep out of early love.
Answer: Question: We should contact the students of the other sex in the following ways EXCEPT _ .Options:A with a good state of mindB in publicC in secretD warmly and generouslyAnswer:C

Write a multi-choice question for the following article: Article: Living in the wild can be hard. Finding food and staying safe aren't easy. Each day, animals struggle to survive in their habitats. Not all animals get by on their own. Some animals form a close partnership with other kinds of animals. These pairings are called symbiotic relationships. In a symbiotic relationship, the animals depend on each other. One animal helps the other meet its needs. Sounds good, right? Not always. Some animals are not very kind to their partners. In some cases, one animal meets its needs but hurts its partner. Take ticks, for example. These insects suck blood to live. To get blood, they attach themselves to other kinds of animals. Ticks can pass germs that cause disease instead of helping their hosts. In other relationships, animals don't treat their partners so poorly. Both animals benefit from living with the other animal. Small animals called cleaner shrimps have found a way of helping fish at coral reefs. As their name suggests, the shrimps clean the fish. They hang out at what scientists call a cleaning station. A fish stops by. Then a shrimp climbs onto the fish and even steps into the fish's mouth. The shrimp uses its tiny claws to pick stuff off the fish's body. That can include dead skin, tiny pieces of food, and wee creatures that can hurt the fish. The fish gets a nice cleaning. The shrimp enjoys a tasty meal of fish trash. Small birds called plovers are also in the cleaning business. They have big customers-crocodiles. Crocs have long snouts filled with sharp teeth. Cleaning them is tricky. When a croc opens its mouth, the plover hops right in. The croc does not snap its snout shut.Instead, it lets the plover eat small, harmful animals attached to the crocodile's teeth. The plover gets an easy meal while the croc gets clean teeth.
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Answer:
Question: Why do the cleaner shrimps clean the fish?Options:A To get fish trash for food.B To eat wee creatures.C To help fish go out of coral reefs.D To get food for fish.Answer:A