1 . Have you ever wondered if you see the same colours as other people? Most people know what blue is when they see it. They call it "blue” because they were taught the word and connected it with what they saw. But how do you know what you see as blue isn't someone else's red?

The ability to perceive （感知）different colours is up to receptors （接受器）in our eyes. Light waves hit these receptors and they react depending on which colour the light is, sending signals to the brain. The brain then reads these signals to determine which colour light the eyes are receiving.

Some people's receptors are more developed than others. The inability of the receptor to feel the light waves correctly means that some people cannot tell the differences between similar colours. Those with more developed receptors can see more colours. We sometimes hear people having an argument about whether something is dark blue or black. It might be because one person has stronger receptors to feel the light than another.

In the past, most scientists would argue that everyone saw colours in the same way. However, research was conducted on monkeys, in which their receptors were changed. This enabled them to see more colours than usual. Normally monkeys can only see blue and green, but the change allowed them to see red. Their brains automatically got used to new colours. This suggests that our brains may find new colors of the things we see. Colours could be a very personal experience , unique to everyone.

So, the next time you talk about your favourite colour, just remember if yours is blue and your friend says red, you two might actually be thinking about the same colour. What if everyone in the world has the same favourite colour, but just calls it different names?

1. What is Paragraph 2 mainly about?

A．How we perceive colours.

B．The inability to see colours.

C．What the brain does with signals.

D．The connection between receptors and light waves.

2. Which of the following might the author agree with?

A．Some people cannot feel colours with their developed receptors.

B．The more light people feel, the weaker receptors they have.

C．People with poor receptors usually have colour weakness.

D．People who have strong receptors can see dark blue.

3. What's the purpose of conducting the research on monkeys?

A．To test the monkeys with colours.

B．To develop the receptors of humans.

C．To enable monkeys to find more colors.

D．To prove everyone sees colours in a different way.

4. Where does the text probably come from?

A．A film review.	B．A science magazine.
C．An art journal.	D．A business newspaper.

2 . A small piece of fish each day may keep the heart doctor away. That’s the finding of a study of Dutch men in which deaths from heart disease were more than 50 percent lower among those who consumed at least an ounce of salt-water fish per day compared             to those who never ate fish.
The Dutch research is one of three human studies that give strong scientific support to the long held belief that eating fish can provide health benefits, particularly to the heart.
Heart disease is the number-one killer in the United States, with more than 550,000 deaths occurring from heart attacks each year. But previous research has shown that the level of heart disease is lower in cultures that consume more fish than Americans             do. There are fewer heart disease deaths, for example, among the Eskimos of Greenland, who consume about 14 ounces of fish a day, and among the Japanese, whose daily fish consumption averages more than 3 ounces.
For 20 years, the Dutch study followed 852 middle-aged men, 20 percent of whom ate no fish. At the start of the study, average fish consumption was about two-thirds of an ounce each day, with more men eating lean fish than fatty fish.
During the next two decades, 78 of the men died from heart disease. The fewest deaths were among the group who regularly ate fish, even at levels far lower than those of the Japanese or Eskimos.This relationship was true regardless of other factors such as age, high blood pressure, or blood cholesterol（胆固醇）levels.
1. In which section of a newspaper can we read this passage?

A．Ads	B．Movies
C．Briefs	D．Health and Diet

2. The passage is mainly about _________.

A．the high incidence of heart disease in some countries

B．the changes in people’s diet

C．the effect of fish eating on people’s health

D．the daily fish consumption of people in different cultures

3. The phrase “This relationship” in paragraph 6 refers to the connection between ____ and the level of heart disease.

A．the amount of fish eaten	B．regular fish-eating
C．the kind of fish eaten	D．people of different areas

4. From the passage we know the author is most probably ___________.

A．a heart doctor	B．a science researcher
C．a supporter of healthy eating	D．a university student

3 . Young people in the United States do not have a strong understanding of the world and their place in it.

Two U．S.­based groups，the Council on Foreign Relations and the National Geographic Society，commissioned an online survey earlier this year.They wanted to know what young people educated in American colleges know about geography，U.S.foreign policy，recent international events，and economics.

The survey was given to over 1,200 Americans between the ages of 18 and 26，all of them presently attending，or having previously graduated from，a 2­ or 4­year college or university.

The average test score，out of 75 total possible answers，was 55 percent.The study identifies a few important problems.For example，only 30 percent knew that the only part of the U．S.government that can declare war is Congress.Only 60% of those taking the survey could identify Brazil on a world map.

Part of the problem，argue the organizers of the survey，is the Internet.They say it is becoming harder to find high­quality information about world events among all the fake news and trivia(琐事)which swamp(淹没)the Web.Forty­three percent of those questioned said they read about the news on Facebook.

Another problem is that most college courses do not require students to learn about international issues.If such information is not required，Richard Haass from the Council on Foreign Relations said，then the United States could have leaders like Gary Johnson.He was a recent presidential candidate who did not know about the Syrian city of Aleppo when a reporter asked him about it.

The survey results were not all bad.The young people also demonstrated a good understanding of climate change and renewable energy.And the majority of them said that international issues were becoming more important to them.

Haass says these findings suggest the need to find ways to get good information to students，both in school and online.To help，the Council on Foreign Relations is creating a new program called CFR Campus，designed to help build knowledge about global issues.

1. What can we learn about the survey?

A．All the participants were recent university graduates.

B．It was given to over 1,200 American people aged from 18 to 26.

C．Its aim is to figure out what the young people know about America.

D．It was an online survey conducted by two US universities.

2. According to the survey，what topic did the young Americans understand best?

A．Environmental matters.

B．Geographic information.

C．Foreign relations.

D．Government organizations.

3. In which column of a newspaper could we find this article?

A．Economics.

B．Entertainment.

C．Education.

D．Politics.