Passage Two

　　Questions 51 to 55 are based on the following passage.

　　Lots of traits are statistically rare among human beings: Left-handedness (just 10 percent of the population!), curly hair (11 percent!), and blond hair (4 percent!), to name a few. But of the more than seven billion people on the planet, only 2 percent can claim to have this one special trait. To put that in perspective, that’s 140 million people in the world.

　　So what’s this rare trait only one in fifty of us possess? Green eyes. That’s right, just 2 percent of the world’s population is lucky enough to have them, green eyes, according to World Atlas.

　　Most of us will be surprised when trying to compare that to other eye colors. For example, some 79 percent of the world population has brown eyes, while 8 percent has blue. About 5 percent of people have hazel eyes and another 5 percent have amber eyes. To put it concisely, green eyes are incredibly unique, given that so small a proportion of the world population possess them. Unique enough, in fact, to give Chris Martin the inspiration that would make Coldplay an overnight success.

　　Green eyes are most commonly seen in Central, Western, and Northern Europe, and typically point to Celtic or German ancestry. At the moment, they are most prevalent in such countries like Britain, Iceland, the Netherlands, Scotland, Estonia, and Scandinavia. As a matter of fact, according to a study conducted by ScotlandsDNA, in Britain, brown eyes are rarer than green. That is, in Britain, 22 percent of the population has brown eyes, compared to the jaw-dropping 30 percent that has green.

　　Despite green eyes being such a rarity, numerous characters in literature and film have them, perhaps to convey a sense of mystery. In fact, many researchers believe that eye color is a true indicator of personality of an individual. For example, several researchers from the University of Queensland and the University of New South Wales found that people with this trait tended to be less agreeable, more competitive, creative, devious (不诚实的), and shy.

　　So there you have it. If eyes truly are the windows of the soul, that means that people with green eyes possess the rarest souls on the planet.

　　51. According to the passage, what is said of the trait of having green eyes?

　　A) It is one of the rarest traits among human beings.

　　B) It distinguishes people of different races.

　　C) It helps to separate people of different ancestries.

　　D) It boosts the confidence of a person with this trait.