Read the following article and select the best answer. Article: Plants have family values, too; it seems, with new research suggesting they can recognize close relatives in order to work together. An ability to tell family from strangers is well known in animals, allowing them to cooperate and share resources, but plants may possess similar social skills, scientists believe. Susan Dudley and Amanda File of McMaster University in Ontario, Canada, report they have demonstrated for the first time that plants can recognize their kin. This suggests that plants, though lacking recognition and memory, are capable of complex social interactions. "Plants have this kind of hidden but complicated social life," Dudley said. The study found plants from the same species of beach-dwelling wildflower grew aggressively alongside unrelated neighbors but were less competitive when they shared soil with their families. Sea rocket, a North American species, showed stronger and healthier root growth when planted in pots with strangers than when raised with relatives from the same maternal family, the study found. This is an example of kin selection, a behavior common in animals in which closely related individuals take a group approach to succeeding in their environment, the researchers said. Kin selection also applies to competition, because if family members compete less with each other, the group will do better overall. "Everywhere you look, plants are growing right up next to other plants," Dudley said," Usually it's a case of each plant for itself. But sometimes those plants are related, and there are benefits to not wasting resources on being competitive, and there is not really a cost to not being competitive as long as your neighbor is also not being competitive." Learning and memory appear to be important for kin recognition in animals, but this isn't an option for plants, she noted. Some researchers speculate that plants communicate through their roots, identifying themselves using tiny chemical signatures specific to each plant's family. Question: From the passage,we learn that _ . - sea rocket is a South American species - sea rocket grows aggressively alongside unrelated neighbors - sea rocket grows aggressively alongside its siblings - sea rocket is a kind of bush without flowers
sea rocket grows aggressively alongside unrelated neighbors

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Read the following article and select the best answer. Article: Mark Twain's works are enjoyed worldwide. His real name was Samuel Langhorne Clemens and he was born on November 30th, 1835, in the village of Florida, Monroe County, Missouri. After his father's death in 1847, Twain was apprenticed to a printer and wrote for his brother's newspaper. Later, Twain worked as a licensed Mississippi riverboat pilot, adopting his name from the call ('Mark twain!'--meaning by the mark of two fathoms) used when sounding river shallows. After the Civil War, Clemens brought an end to the steamboat traffic and moved to Virginia City. On February 3, 1863, 'Mark Twain' was born when he signed a humorous travel account with his new name. In 1864, Twain went to San Francisco to work as a reporter. He traveled in France and Italy and his experience were recorded in 1869 in the Innocents Abroad, which brought him wide popularity, and made fun at both American and European prejudices and manners. In 1870 he married Olivia Langdon. Together they relocated to Harford a year later. Meanwhile, Twain continued to lecture in the United States and England. Between 1876 and 1884 he published several masterpieces, including Tom Sawyer, the Prince and the Pauper, Life on the Mississippi, and Huckleberry Finn. In the 1890s, Twain lost most of his earnings in financial speculations and in the downhill of his own publishing firm. The death of his wife and his second daughter brought a sense of gloom in the author's later years, which is seen in writings and his autobiography. Twain died on April 21st, 1910. Question: The name 'Mark Twain' was first used - in 1835 - in 1863 - in 1869 - in 1870
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in 1863

Ques: Read the following article and select the best answer. Article: You're in your office when you learn there's someone with a gun wandering outside. You can hear gunshots and screams. What do you do? That's the challenge for users of a new virtual reality program called SurviVR, designed to train employees how to deal with an active shooter situation in the workplace. The program works with HTC Vive, the virtual reality headset released earlier this year. An active shooter situation is when an armed person or people actively shoot in a small, populated area with the intention to kill. There were 20 such situations in the United States last year and 20 the year before, according to FBI statistics, resulting in a total of 231 deaths. This year saw the deadliest active shooter situation in US history , with 49 people killed in a nightclub in Orlando. In the training situation, users have four choices. They can lock themselves in the office. They can hide, perhaps in the office closet. They can run for an exit. Or they can use something in the office--a computer or a cup a pair of scissors-as a weapon to fight the shooter. This is an improvement on standard active shooter training. Gallo says, which typically teachers people to lock themselves in place and hide. The "lock down" method is often ineffective, he says, and has resulted in many deaths in recent years. In the training's basic level, no one gets killed. But as the trainings become more advanced, players who make a wrong choice be shot. There's no blood; the screen simply turns black slowly. If this sounds terrifying, that's the point, says Gallo. There are plenty of training programs to teach employees how to deal with workplace violence, sometimes involving role play with toy guns. But these trainings are basically games. Gallo says, with employees relaxed and even enjoying themselves. To teach people what they really need to know for an active shooter situation, they need to be scared. "SurviVR will take the fear and turn it into confidence." Gallo says. Question: What's the author's purpose of describing a dangerous scene in Para. 1? - To attract the readers' attention on the new virtual reality program. - To show the challenge that the readers are required to face. - To warn the readers of the possible dangers in the working place. - To inform the readers of the correct response in such a situation
Ans:
To attract the readers' attention on the new virtual reality program.