Read the following article and answer the question. Article: Every electronic gadget needs good memory. A music player stores songs, albums and playlists. A computer holds schoolwork and programs and remembers how far a player has advanced in his or her favorite game. Mobile phones store names, numbers and hundreds of texts. Now, scientists in California say they have come up with a way to turn a living cell into a memory device. It can store only one tiny bit of information, but it's a start. In the future, a cell-based gadget might travel through the body and record measurements. The benefit to human health could be big: the right tool, for example, might record the earliest signs of disease. Doctors, scientists and other curious people want to know what is happening inside the body, even at levels that can't be seen by the naked eye. So far, there is no device small enough to travel through the bloodstream. If normal machines won't do the trick, perhaps biology will. Scientists who work in the field of synthetic biology are trying to find ways to turn living things into human tools. In the case of the new memory device, bioengineers from Stanford University used the genetic material inside living cells to record information. This genetic material consists of DNA. Found in nearly every cell, DNA carries all of the information that keeps a living thing alive. In the new experiment, the researchers turned DNA from bacteria into a switch. They "flip " a small section of DNA. Then, using the same procedure , the scientists flip the section again--returning it into its normal structure. Using these DNA switches, "We can write and erase DNA in a living cell," bioengineer, Jerome Bonnet, explained to Science News. It might take years before his team or others identity whether a DNA-based memory device might be practical. Right now, it takes one hour to complete a flip. That is far too long to be useful. Plus, a flipped section has a very small little memory--less than what a computer uses to remember a single letter. "This was an important proof that it was doable,"... Question: What do we know about a flipped section of DNA? Answer:
OPTIONS:
- It has a very small memory.
- It can function as a computer.
- It has one letter in it.
- It takes a day to complete it.

Answer: It has a very small memory.

Question: Read the following article and answer the question. Article: Let's do some sleep math.You lost two hours of sleep every night last week because of a big project due on Friday.On Saturday and Sunday,you slept in,getting four extra hours.On Monday morning, you were feeling so bright-eyed that you only had one cup of coffee, instead of your usual two.But don't be cheated by your energy.You're still carrying around a heavy load of sleepiness, or what experts call"sleep debt"----in this case something like six hours,almost a full nights' sleep. Sleep debt is the difference between the amount of sleep you should be getting and the amount you actually get.It's a deficit that grows every time we skim some extra minutes off our nightly sleep."People accumulate sleep debt gradually without being noticed,"says William C.Dement,founder of the Stanford University Sleep Clinic.Studies show that such short--term sleep deprivation leads to a foggy brain,worsened vision,and trouble remembering. Long-term effects include obesity,insulin resistance, and heart disease. A survey by the National Sleep Foundation reports that we're losing one hour of sleep each night----more than two full weeks of sleep every year. The good news is that,like all debt, with some work,sleep debt can be repaid. Adding an extra hour or two of sleep a night is the way to catch up.For the long--term lack of sleep,take it easy for a few months to get back into a natural sleep pattern. Go to bed when you are tired,and allow your body to wake you in the morning(no alarm clock allowed).You may find yourself catatonic in the beginning of the recovery cycle:expect to have ten hours shut-eye per night. As the days pass, however,the amount of sleeping time will gradually decrease. So earn back that lost sleep----and follow the dictates of your innate sleep needs. You'll feel better."When you put away sleep debt, you become a superman,"says Stanford's Dement, talking about the improved mental and physical capabilities that come with being well rested. Question: If you have short--term sleep deprivation,_. Answer:
OPTIONS:
- you can think and remember things clearly
- you can still see everything very clearly
- you can drive your car easily
- you may have a poor sight
Answer: you may have a poor sight

Question: Read the following article and answer the question. Article: From early times, man has been interested in art. People have often worked together to collect and save the world's art treasures. Fine art treasures from many countries are kept in an art museum called the Louvre in Paris, France. The works of art have been collected by the people of France over many centuries. It is the biggest art museum in the world. The Louvre has not always been a museum. The first building was a fort. In 1190, it was the king's castle with high walls and a round tower, which had a river around it to keep out the enemies. Over the years, the number of buildings around the castle grew. By 1350, the castle no longer needed a fort. The Louvre became a palace home for French kings and queens. During times of peace, new treasures were brought in. During the days of war, many treasures were stolen, and the buildings were damaged. When Francis I became king of France in 1515, he brought in many artists from other countries. One of the artists was Lenardo da Vinci from Italy. Da Vinci's "Mona Lisa" is the best known painting in the museum today. In 1793, the Louvre became a public museum. It is a place where art treasures are kept for everyone to enjoy. Every year millions of people from all over the world come to the Louvre to see the masterpieces. Question: Most of works of art in the Louvre have been collected probably by _ . Answer:
OPTIONS:
- the French people
- Francis I
- Leonardo da Vinci
- people of the world
Answer:
the French people