The future is time that is to come. The future is not the present or the past. It is later. We have seen many possible futures in science fiction. They range from the world's polar ice caps melting to nuclear winters. But not all futures are morbid. We have seen the human race spread all over our universe, humans and aliens living in harmony together all over the universe.

    It is very likely that we will make some kind of breakthrough in our ability to travel through space sometime in the next 150 years. This would give us the ability to rule other planets.

    Finally, the Earth will die whether it is in 1,000 years or 100,000 years. We will be forced to move to another planet then. It's really just a matter of time. When we do so, what will we discover?

    Personally, I think everyone will be speaking the same language in 200 years. A world government definitely seems to be in our future. It is stable and has few wars. Indeed, the only type of wars that can happen is the civil war.

    And what if we face aliens? If they are friendly, we would probably benefit a lot from putting our knowledge together. They must have advanced technology to travel for great distances. We could benefit from their technology. But if they aren't friendly, then we will be in trouble. Hope that we will have become advanced enough, smart enough, and generally a better race by the time we meet them. But this is all probably being discussed for nothing, because any race out there among the stars is probably as curious as we are about other creatures.

    Most maps show places you can visit and how to get there. Most maps, however, were not made by astronomers. At a recent meeting in Texas, three teams of these scientists presented new maps to show where dark matter was.

    Dark matter neither produces nor reflects light, which means it's invisible (看不见) to human eyes and to most scientific instruments. That makes it a challenge to measure and study. What makes the matter more upset: Scientific measurements show that the universe holds about five times as much dark matter as ordinary matter. Making up the known part of the universe, ordinary matter includes you, your dog, Earth, the sun, stars and planets.

    Scientists find dark matter in the same way, they discover other things we can't see by observing how the invisible matter affects things we can see. We can't see wind, for example, but we can feel a gentle wind or watch a windmill(风车)turning on a hill. Dark matter doesn't turn windmills, but it does have gravity(引力). Like ordinary matter, dark matter holds everything around it firmly with gravity. Dark matter's gravity holds galaxies (星系) together and bends rays of light as they move past.

    To make the new maps, astronomers trained powerful telescopes to watch for bending light arriving from distant galaxies. These telescopes recorded light that came from galaxies billions of light-years away. By studying how the light changed as it traveled through space, the astronomers could work out the location and shape of dark matter groups.

    One of the new maps shows dark matter is more than 600 times as large as a full moon. The other covers an area more than a thousand times as large. But that's just the beginning: The astronomers want to carry on further studies to better understand the dark matter.

    A scientist once said: "I have concluded that the earth is being visited by intelligently controlled vehicles from outer space."

    If we take this as a reasonable explanation for UFOs (unidentified flying objects), questions immediately come up.

    "Why don't they get in touch with us, then? Why don't they land right on the White House lawn and declare themselves?" people asked.

In reply, scientists say that, while this may be what we want, it may not necessarily be what they want.

    "The most likely explanation, it seems to me," said Dr. Mead, "is that they are simply watching what we are up to—that responsible society outside our solar system is keeping an eye on us to see that we don't cause a chain reaction that might have unexpected effects for the outside of our solar system."

    Opinions from other scientists might go like this: "Why should they want to get in touch with us? We may feel we're more important than we really are! They may want to observe us only and not interfere(干涉) with the development of our civilization. They may not care if we see them but they also may not care to say 'hello'."

    Some scientists have also suggested that Earth is a kind of zoo or wildlife reserve. Just as we set aside wilderness areas and wildlife reserves to allow animals and growing things to develop naturally while we observe them. So perhaps Earth was set aside ages ago for the same purpose.

    Are we being observed by intelligent beings from other civilizations in the universe? Are they watching our progress in space travel? Do we live in a huge "zoo" observed by our "keepers," but having no communication with them?

    Never before in our history have we had to face ideas bravely like these. The simple fact is that we, who have always regarded ourselves as supreme in the universe, may not be so. Now we have to recognize that, among the stars in the heavens, there may very well be worlds lived by beings who are to us as we are to ants.

    Children start out as natural scientists, eager to look into the world around them. Helping them enjoy science can be easy, as there's no need for a lot of scientific terms or expensive lab equipment..

    Give them time to think. Studies over the past 30 years have shown that, after asking a question, adults typically wait only one second or less for an answer, no time for a child to think. , children can give more logical, complete and creative answers.

    Watch your language. Once you have a child involved in a science discussion, don't jump in with "That's right" or "Very good". . But in talking about science, quick praise can signal that discussion is over. Instead, keep things going by saying "That's interesting or "I have never thought of it that way before", or coming up with more questions or ideas. Never force a child to think. , as children are always thinking, without your telling them to.

    What's more, giving them freedom to think can turn a conversation into a performance. The child will try to find the answer you want, in as few words as possible, so that he will be a smaller target for your disagreement.

    . Real-life impressions of nature are far more impressive than any lesson children can learn from a book or a television program. Let children look at their fingertips through a magnifying glass (放大镜), and they'll understand why you want them to wash before dinner. Rather than saying that water evaporates (蒸发), set a pot of water to boil and let them watch the water level drop.

A．It doesn't make sense

B．Listen to their questions

C．Teach them by examples

D．You only have to share your children's curiosity

E. It began with a set of questions that lasted nearly two hours

F. When adults increase their "wait time" to three seconds or more

G. These words work well when it comes to encouraging good behavior

    When a mom attended school to help her disabled son, her son and the school thanked her in the sweetest way. It wasn't until after his college years that Marty became disabled after 1 down stairs. When her son 2 to get his MBA, Judy O'Connor attended every class with him to help him write and 3. Every day, Judy would sit by Marty in class, taking notes to make sure of 4 specific requests, raising her hand so he could answer questions, and silently filling in his 5 on test days. "After a little while, we found that working together we could 6 a great deal," Marty says.

    On graduation day at Chapman University, Judy was dressed in black to mix in with the other 7. Little did she know she'd soon be the center of 8. When Marty's name was called, his mom helped 9 him to the front of the stage, 10 for a picture with Marty as he received his diploma. Over the loudspeaker, an 11 was made in a voice 12 with happy tears: The university was giving Judy an honorary (荣誉的)MBA." A lump came to my throat. I was proud of my son and 13 to be honored," says Judy.

    The mother and the son had joked that Judy was putting in enough work to earn her own 14. To Marty, there was no question that his mom, a retired elementary school teacher with a business degree, had 15 earned her honorary MBA.

    Perhaps just as important, Judy gave Marty 16. Life as Marty knew it before the 17 may have changed, but he encourages anyone in a 18 situation to keep up hope. "Just keep an open mind, 19 you can make your diversity into your advantage and take challenges as a(n) 20 for growth in your life," he says.

    As you know, science plays important role in our education. Do you want to keep up with the latest research and discoveries in science? There are many good websites  you can check out the latest in the science world.

    One great site is Science News for Kids. This site reports science news  (cover) a wide range of subjects. The articles are intended  younger readers, adults will find this site suitable for them as well. Another wonderful site, one that I check out every day,  (call) Science Daily. The site is  (constant) updated with news, often about exciting  (finding) that change how we view the world.

These sites post the latest stories and also keep all the past articles they  (post) earlier. That way you can find just about anything that  (be) related to the science fields your are interested in.

1）写信意图；

2）活动时间和地点；

3）活动目的和内容；

4）表达希望。

注意：1）词数100左右；

2）可以适当增加细节，以使行文连贯。

参考词汇:科技小发明:technology gadgets

Dear David,

    I'm glad to invite you to the Science Festival.

Yours,

Li Hua