A recent survey of 2000 parents in Britain showed that they are often afraid of science questions asked by their curious children only because they have no idea what the answer is. Here is a list of some simple questions that you can ask your parents to see if they know the answers.

    Q: Why is the sky blue?

    A: You probably know white sunlight is made up of seven colors. While it moves in a straight line when going through space, it starts to divide as it hits “raised area” in the atmosphere. The ones with longest wavelengths pass through easily. The blue , however , can be taken in by the gas molecules (分子) because it has a shorter wavelength , which in turn scatters (使分散) it in different directions. That’s why when you look up at the sky, it appears to be blue.

    Q:Why does the moon sometimes appear during the daytime?

    A: The simple answer to that is because just like any other object it is being lit by the sun. As long as it is around 45 degrees or even 90 degrees off the sun, it will receive light and be able to be seen. The only time it is not able to be seen during its 28-day orbit (軌道) around the earth is when it is right between the earth and the sun. That’s because its back , which is not lit by the sun, is facing us.

    Q: Where do birds/ honeybees go in winter?

    A: While the bird part is quite easy, since a lot of them get together and travel, the honeybee part is likely to puzzle your parents. It turns out that these busy insects stop being that active when the temperature drops below 50°F. Instead ,they get together in the lower central area of the hive （蜂巢）and form a ball around their queen. This helps keep both warm enough to survive the cold winter months.

1.The sky looks blue mainly because the color blue in the sunlight_______.

A. has the longest wavelength among all the colors

B. cannot be taken in by the gas molecules

C. doesn’t hit “raised area” in the atmosphere

D. cannot pass through space successfully

2.How long can’t the moon be seen during the daytime in a month?

A. 2                             B. 28                           C.30                                      D. 31

3.What do honeybees choose to do when the temperature drops below 50°F?

A. They choose to be active in the wild.

B. They choose to keep themselves warm.

C. They choose to travel to a warm place.

D. They choose to get together in the upper central area of the hive.

4.What is NOT explained in the passage?

A. Why is the sky blue?

B. Why is the moon able to be seen during the daytime?

C. Why do birds travel in winter?

D. Where do honeybees go in winter?

The United States is suffering its worst drought (干旱) in almost sixty years. The National Climatic Data Center also says high temperatures in June added to the warmest twelve-month period on record. Record-keeping began in 1895. The drought map showed that conditions improved in the Southeast in June compared to May. But the drought is expected to continue in large parts of the country. Last week, Agriculture Secretary Tom Vilsack met with President Obama. Mr Vilsack says the drought has seriously influenced some crops, such as corn and soybeans (大豆). And the United States is the world's leading producer. 

    The drought has made prices of com and soybeans increase. Both of them are used in food production and for animal feed. Last week the United Nations Food and Agriculture Organization reported that corn and wheat prices increased by 20% over the past three weeks.

In the United States, farmers may quickly reduce the size of their animals rather than pay higher feed prices to keep them. That increased supply of meat would reduce meat prices in the short term. But those prices could increase in several months.

Mr Vilsack says the effect of the drought is hard to predict(預(yù)測). Some areas are getting rain, and drought-resistant (抗旱的) seeds have helped crops grow well in some areas.

1.We can know the drought record of the USA has been kept for ________years of the USA up to now.

A. 97                                                        B. 207

C. 221                                          D. 117

2.Which of the following American presidents met with Tom Vilsack?

A. George Washington.                 B. Abraham lincon.

C. George Bush.                                  D. Barack Obama.        

3. If the price of a kilo of corn was 3 dollars last December, how much is a kilo of corn now?

A. 2.4 dollars.                                        B. 3 dollars.

C. 3.6 dollars.                                         D. 3.9 dollars.

4.Why is the meat price lower than before?

A. Because there are more and more animals.

B. Because farmers kill them to save their food.

C. Because people don't like eating meat now.

D. Because the government (政府) asks the meat price lower.

5.What is the best title for the passage?

A. US faces the worst drought in almost sixty years.

B. Take action to help the USA.

C. What does the country do in the drought areas?

D. President Obama meets with Agriculture Secretary.

Laptop computers are popular all over the world. People use them on trains and airplanes, in airports and hotels. These laptops connect people to their workplace. In the United States today, laptops also connect students to their classrooms.

Westlake College in Virginia will start a laptop computer program that allows students to do schoolwork anywhere they want. Within five years, each of the 1500 students at the college will receive a laptop. The laptops are part of a $10 million computer program at Westlake, a 110-year-old college. The students with laptops will also have access to the Internet. In addition, they will be able to use e-mail to “speak” with their teachers, their classmates, and their families. However, the most important part of the laptop program is that students will be able to use computers without going to computer labs. They can work with it at home, in a fast-food restaurant or under the trees-anywhere at all!

Because of the many changes in computer technology , laptop use in higher education, such as colleges and universities, is workable. As laptops become more powerful, they become more similar to desktop computers. In addition, the portable computers can connect students to not only the Internet, but also libraries and other resources. State higher-education officials are studying? how laptops can help students. State officials are also testing laptop programs at other universities, too.

At Westlake College, more than 60 percent of the staff use computers. The laptops will allow all teachers to use computers in their lessons. As one Westlake teacher said, “ Here we are in the middle of Virginia and we’re giving students a window on the world. They can see everything and do everything.”

1. The main purpose of the laptop program is to give each student a laptop to ________.

A. use for their schoolwork?

B. access the Internet

C. work at home

D. connect them to libraries

2.Why is the word “speak” in the second paragraph in quotation marks(引號)?

A. They don’t really talk.

B. They use the computer language.

C. Laptops have speakers.

D. None of the above reasons is correct.

3.Which of the following is true about Westlake College?

A. All teachers use computers.

B.1500 students have laptops.

C. It is an old college in America.

D. Students there can do everything.

4.A window on the world in the last paragraph means that students can ________.

A. attend lectures on information technology

B. travel around the world

C. get information from around the world

D. have free laptops

5. What can we infer from the passage?

A. The program is successful.

B. The program is not workable.

C. The program is too expensive.

D. We don’t know the result yet.

A teenage girl couldn’t stand her parents’ family rules, so she left home.

She wanted to be famous. But she had poor education and several years later she had to ask for food on the street for a living. Now her father has died. Her mother is an old woman. But she is still looking for her daughter. She has been to every corner of the city. Everywhere she goes, she puts up a big photo of herself on the wall. At the lower part of the photo she writes,“I still love you . . . , come back home!”

One day, the daughter saw one of the photos. The face was familiar（熟悉）. “Is that my mother?” she moved closer and read the words“I still love you ...” She cried. When she got home, it was early morning. She knocked on the door. The door opened itself. She rushed to her mother’s bedroom. Her mother was sleeping. She woke her mother up,“It’s me! Your daughter is back home!” The mother and daughter held each other, full of happy tears. The daughter asked, “Why is the door not locked? A thief could get in.” The mother answered softly, “The door has never been locked since you left.”

The door of parents’ love for their children will never be closed.

1.The girl left home because her parents were cruel to her.

2.No money caused the girl couldn’t be famous.

3.The mother put up her daughter’s photo on the wall so that she could find her daughter .

4.When the girl came back home, she couldn’t wait to see her mother.

5.From the story we know that parents love their children forever at any time.