Read the following article and select the best answer. Article: Are you a forgetful person? You might be able to blame your genes, a new study in the journal Neuroscience Letters suggests. Researchers from the University of Bonn have identified a variant on the DRD2 gene that seems to be associated with increased forgetfulness. Everyone has one of two variants of the DRD2 gene, the difference is just one letter in the genetic code: Some people have the cytosine (C) variant, while others have the thymine (T) variant. The researchers wanted to see how having one variant over another was associated with forgetfulness. To test this, they analyzed the DRD2 gene of 500 study participants, and also had the participants answer surveys about their forgetfulness (such as how often they misplaced their keys, or forgot names). Most of the study participants--three quarters of them--had the thymine gene variant, while the other quarter had the cytosine gene variant. Researchers found an association between more forgetfulness problems and having the thymine gene variant of DRD2. Meanwhile, the cytosine gene variant seemed to have a protective effect against forgetfulness. However, "there are things you can do to compensate for forgetfulness; writing yourself notes or making more of an effort to put your keys down in a specific location--and not just anywhere," study researcher Dr. Sebastian Markett, of the University of Bonn, said in a statement. Research has also suggested that some age groups are more forgetful than others. A recent national poll showed that millenials, who were born between the early 1980s and the early 2000s, are actually more likely than seniors to be absent-minded with things like what day of the week it is, where they put their keys and remembering to bring their lunch. Meanwhile, another study recently published in the journal BMC Psychology showed that men are more likely than women to experience minor memory problems. Question: Which section of a newspaper is the test most probably taken from? - Health. - Nature. - People. - Science
Science

Read the following article and select the best answer. Article: Many people have wondered what makes the oceans rise and fall on the word's beaches twice a day. Those tides are caused by the force of the Moon's gravity and the rotation of the Earth. Gravity acts on the center of any solid object. The Earth is mostly molten rock, but compared to the oceans, we can think of it as a solid object. As you know, the oceans are fluid and lie on the surface of the Earth. When the Moon is overhead, the oceans are four thousand miles closer to the Moon than the Earth's center is. Because the oceans are closer, the Moon pulls harder on the water than on the Earth. This stronger pull makes the water bunch up a little under the Moon, creating a high tide. At the same time, the oceans on the opposite side of the Earth are four thousand miles farther from the Moon than the Earth's center is. The Moon's pull on this water is weak. This water bunches up because it is "left behind"(making another high tide) as the Earth is pulled slightly towards the Moon. When the waters bunch up on these two sides of the Earth, they draw water away from the other sides of the Earth, which creates the low tides. As the Earth rotates, different parts of the land and oceans pass through the high-tide and low-tide zones. And that makes the waters on our coasts go up and down. Question: According to the passage, there would be no tides if there were no _ . - Earth rotation - gravity from the Earth - gravity from the Moon - Moon's gravity or Earth rotation
Moon's gravity or Earth rotation

Q: Read the following article and select the best answer. Article: Scientists would like to place a huge mirror in space above the earth. It might be sixty miles wide. It would be used to catch the rays of the sun. It would direct the sun's rays upon the earth as a child might do to make sunlight dance on the wall with a hand mirror. Why do they want to do this? The sun's rays could be helpful in many ways. They could light up cities by night. The warm rays could stop frosts which might come at night and hurt fruit crops. They could melt dangerous icebergs in the ocean. Perhaps they could change cloud movements and bring rain where it is needed. Question: The huge mirror is _ . - something in a story - already made - just an idea - to be made soon
A: just an idea

Q: Read the following article and select the best answer. Article: It is sometimes reported that strange flying objects have been seen high up in the sky. People call these strange objects Unidentified Flying Objects(UFOs). These UFOs caused a lot of interest. Some of the reports about them are difficult to believe.Some have been explained in scientific ways. Others have never been explained. Here is an account of UFOs from a report. Dennis Bardens,who wrote an article,tells us that he once saw a UFO himself.He was having dinner one night with a friend near Tripoli ,Libya ,and after dinner the two men walked across a yard to his room to look at some papers.Bardens noticed that the moon looked strange that night. "It wasn't the moon,"was the reply. They watched the light and saw that it was moving.It seemed to be an object rather like a big plate.In some ways it looked like smoke with a light on it,but it wasn't smoke because it didn't change its shape.It was moving in a regular way.That is to say,it didn't go suddenly faster or more slowly,and it didn't go higher or lower.So the two men decided that there must be men in it. When it came nearer to Libya,Bardens said that he felt eyes looking at him.He was being watched in the darkness. When it was nearer,they noticed that the bottom parts were brighter than the top.The bottom was yellow and the top was red.Then the object suddenly turned away and left Libya,moving very fast. On a later day Bardens talked to other people about it,and he found some who had seen it.They all described it in the same way.Could they all the mistaken? Question: The UFO looked like _ . - smoke - light - a moving object - a large plate
A: a large plate