Question: Write a multi-choice question for the following article, with the given choices and answer: Article: Mars appears to be flowing with small streams of salty water,at least in the summer,scientists reported Monday."It suggests that.it would be possible for there to be life today on Mars,"NASA's science mission chief,John Grunsfeld,said at a news conference on September 28,2015. The streams are about 12 to 15 feet wide and 300 feet or more long,scientists said."What we're dealing with is wet soil.thin layers of wet soil,not standing water,"said Aifred McEwen of the University of Arizona at Tueson!the principal scientist for the Mars Reconnaissance Orbiter's high-resolution imaging experiment. Because liquid water is essential to life,the findings could have major implications for the possibility of Martian life.The researchers said further exploration is needed to determine whether microscopic life exists on the planet. The presence of liquid water could also make life easier for astronauts visiting or living on Mars.Water could be used for drinking and for creating oxygen and rocket fuel.NASA's goal is to send humans there in the 2030s. The evidence of flowing water consists largely of dark,narrow streaks on the surface that tend to appear and grow during the warmest Martian months and fade the rest of the year. Mars is extremely cold even in summer,and the streaks are in places where the temperature is as low as minus 10 degrees Fahrenheit.But salt can lower the freezing point of water and melt ice. The source of the water is a mystery.Scientists noted it could be melting ice.It could be an underground aquifer,which is rock or sand that can hold water.It is possibly water vapor from the thin Martian atmosphere,Or it may be a combination Michael Meyer,lead scientist for NASA's Mars exploration program,said the only definitive way for now to determine whether there's life on Mars is to collect rocks and soil for analysis on Earth - something a U.S.lander set for lift-off in 2020 will do. Options: A state B source C temperature D taste Answer: B source Question:
Answer: Scientists are uncertain about the _ of the water on Mars.

[Q]: Write a multi-choice question for the following article, with the given choices and answer: Article: Using too much water or throwing rubbish into our rivers are clear ways that humans can put our water supply in danger , but we also affect our water supply in less obvious ways. You may wonder how paving a road can lead to less useable fresh water. A major part of the water we use every day is groundwater. Groundwater does not come from lakes or rivers. It comes from underground. The more roads and parking lots we pave the less water can flow into the ground to become groundwater. Human activity is not responsible for all water shortages . Drier climates are of course more likely to have droughts than areas with more rainfall, but in any case, good management can help to make sure there is enough water to meet our basic needs. Thinking about the way we use water every day can make a big difference, too In the United States , a family of four can use 1. 5 tons of water a day! This shows how much we depend on water to live, but there's a lot we can do to lower the number. You can take steps to save water in your home. To start with use the same glass for your drinking water all day. Wash it only once a day. Run your dishwasher only when it is full . Help your parents fix any leaks in your home. You can even help to keep our water supply clean by recycling batteries instead of throwing them away. Options: A All water shortages are due to human behavior. B It takes a lot of effort to meet our water needs. C There is much we can do to reduce family size. D The average family in America makes proper use of water. Answer: B It takes a lot of effort to meet our water needs. Question:
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[A]: What can be inferred from the text?

input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: Many of us believe that a person's mind becomes less active as he grows older.But this is not true,according to Dr.Lissy F.Jarvik,professor of psychiatry at the University of California,Los Angeles,and a board member of the New Center for Aging at the Veterans Hospital.She has studied the mental functioning of aging persons for several years.For example,one of her studies concerns 136 pairs of twins, who were first examined when they were already 60 years old.As Dr.Jarvik continued the study of the twins into their 70s and 80s,their minds did not generally decline as was expected. However,there was some decline in their psycho-motor speed. This means that it took them longer to accomplish mental tasks than it used to.But when speed was not a factor,they lost very little intellectual ability over the years.In general,Dr.Jarvik's studies have shown that there is no decline in knowledge or reasoning ability.This is true not only into the 30s and 40s,but into the 60s and 70s as well. As for learning new things,and ability to remember,studies by Dr.Jarvik and others show that the old are equal to the young.It is true that older people themselves often complain that their memory is not as good as it once was.However,much of what we call"loss of memory"is not that at a11. In the cases where the older person's mind really seems to decline,it is not necessarilv a sign of a decay due to becoming old or"senility".Often it is simply a sign of a depressed emotional state.This depression usually can be got rid of by counseling with a psychologist,or medicine which fights depression. In American society,when an older person loses something,we tend to call him or her"senile".But notice that when a younger person loses something,he does not blame it on senility or loss of memory.He finds some other excuse! Options: A reason better B learn fewer new things C remember less D 1ose little ability to remember Answer: D 1ose little ability to remember Question:
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output:
According to Dr.Jarvik's studies,middle-aged and older persons should expect to .