Right now, for a short period of time, the Earth has two moons. One moon is the one you know. The other is a tiny car-sized moon that showed up in the last few years and could leave within tile next month.
In mid-February, two scientists at the Catalina Sky Survey noticed a moving dot on their computer screens. That seemed unusual, because most of the stars on their screens appear to stay in one position.
At first, scientists wondered if it was a human-made object, like part of a rocket. But after more measurements, it seems clear that the object is a asteroid (小行星)—a chunk of rock floating in space.
There are many asteroids in space, but most of those in our solar system are orbiting (环绕) the Sun. The object the scientists had noticed was orbiting the Earth. The asteroid had been orbiting the Sun, but it passed too close to the Earth and was pulled in by the Earth's gravity.
The object has been given the name "2020 CD3". When we think of a moon, we most likely think of the Earth's moon. But the word "moon" can actually mean any body that goes around a planet. That makes 2020 CD3 a moon of the Earth.
Or perhaps a mini-moon. Scientists say 2020 CD3 is probably only about 6-12 feet (2-3.5 meters) wide when measured through the middle.
What's very clear is that 2020-CD3 is not a very stable moon. It appears to have been drawn in by the Earth's gravity about three years ago, and has since followed a very unusual path.
The Earth's main moon has a very stable orbit around the Earth. The orbit taken by 202Q CD3, on the other hand, circles around wildly.
This isn't the first time the Earth has load a mini-moon. In 2006, there was also an asteroid caught by the Earth's gravity. It was named 2006 RH120, and it only stayed around for about a year.
2020 CD3 will not probably remain under the power of Earth's gravity for long. Scientists think that the mini-moon will leave by April.
But for now, the Earth has two moons.
1.How did 2020 CD3 become a moon of the Earth?
A.It appeared on the computer screens. B.It was sent up into space by human.
C.It was caught by the Earth's gravity. D.It orbited the Sun in an unusual way.
2.Which of the following best explains the underlined part in Paragraph 7?
A.2020 CD3 is a large piece of rock floating in space.
B.2020 CD3 can't stay in one position for a long time.
C.2020 CD3 travels too close to the Earth when orbiting the Sun.
D.2020 CD3 has always changed its path since becoming a moon.
3.What is the best title for the passage?
A.The Earth Has a New Moon For Now B.The Research On the Moon 2020 CD3
C.Two Moons For the Earth From Now On D.The Earth Needs the Mini-moon For Long
A group of 30 young people in a software company was a team who were willing to learn. The team leader decided to teach them about finding real solutions (解决办法) to the problems.
The team was called to play a game in a hall. They were quite surprised. As they entered the hall, they found the hall decorated with colourful papers and balloons all over the place. It was more like a kid's play area, than a meeting hall. Also, there was a huge box of balloons placed in the hall.
The team leader asked everyone to pick a balloon from the box and asked them to blow it. Every one happily picked a balloon and blew it.
Then the team leader asked them to write their names on their balloon carefully so that the balloons didn't blow up. All tried to write their names on the balloons, but not everyone was successful. A few balloons blew up because of pressure (压力) and they were given another chance to use another balloon.
Those who failed to mark their names even after the second chance were ruled out of the game. After the second chance, 25 were left to move on to the next level. All the balloons were collected and then put into a room.
The team leader announced the members to go to the room and pick the same balloon that had his name on it. Also, he told them that no balloon should blow up and warned them to be very careful!
All 25 members reached the room, where the balloons carrying their names were thrown here and there. They were searching for the balloons carrying their names. While they were in a rush to find the balloons, they tried not to burst them. It was almost 15 minutes and no one was able to find the balloon carrying his own name.
The team was told that the second level of the game was over.
Now it is the third and final level. They were asked to pick any balloon in the room and give it to the person named on the balloon. Within a couple of minutes all balloons reached the hands of each person.
The team leader announced: this is called the real solution to the problems.
1.When the young people were called to play a game, they ________.
A.had no idea what they were asked to do B.laughed at the idea of playing a game
C.looked forward to playing a kid's game D.knew what game they were going to play
2.At the first level of the game, each person in the team was asked to ________.
A.write his name on a balloon and blow it B.blow a balloon and write his name on it
C.pick a balloon with someone's name on it D.find someone's name on different balloons
3.The key to success at the third level of the game is ________.
A.thinking very clearly B.helping each other
C.practicing more often D.believing in oneself
Everyone these days likes smart phones, even your little kids. Finding him or her spending too much time on mobile phones would surely turn you down. You would think this will limit his or her growth but what if we tell you, mobile phones could actually help them be smarter and healthier. Seriously, there are some best apps for kids that are willing to offer much more.
Drawing for Kids
With this app, your child will learn to draw cute characters in a fun and playful manner. The use of animations (动画) and drawings makes this app simply unique. It is an app which gives your kids a chance to develop their creativity.
Countries and Capitals
Countries and Capitals app is one of the best apps for kids that help them to learn and know about all the countries and capitals on their own. With the help of voice assistance in the app, anyone including kids can easily manage to operate the app. It will give an idea about all the continents (洲), countries, capital cities and flags.
Toca Doctor
Let your kids be a doctor for a day. Examine a patient and solve fun puzzles and mini-games that take place in the human body. Beautiful artwork and fun sound guides your kids through 5 different puzzles! Toca Doctor is a fun and puzzling digital toy for kids.
Toy-Story (￡l.99)
Disney's latest official Toy Story app puts kids in charge of the storytelling. They choose a setting, characters, props, and actions to create a tale while recording their own voice to be played back afterward. Buzz, Woody, and Jessie are all among other characters.
1.Which app can help children learn more about our body?
A.Drawing for Kids. B.Countries and Capitals.
C.Toca Doctor. D.Toy Story.
2.Which of the following is true about the apps?
A.People happily let kids use smart phones. B.Kid apps are bad to their growth.
C.Not all apps above are free to download. D.Kids can't learn things with apps.
Jayce Crowder began noticing when he was in kindergarten that he looked different from his classmates. They had two hands. He had one. It started when one boy laughed at him, says his mother, Cortney Lewis. He would return to their home with questions: Why am I ______? Why me? Why? Lewis didn't know what to do at that time. How could she ______ answers to her son's questions when she had never found those answers herself?
A few weeks later, Lewis came home from her job and ______ the TV to a news story about a six-foot-three eighth grader from Washington, Trashaun Willis, then 14, had become famous after posting videos of his slam dunks, and, ______ Jayce, he was missing most of his left arm. Lewis called Jayce in. He was fascinated. At the time, it seemed that ______ Trashaun would simply be an inspiring moment for Jayce—he'd see a role model with a similar birth defect (缺陷). A family friend asked the newspaper to help set up a meeting with Trashaun to build Jayce's ______.
The boys met at Washington Middle School on a Saturday afternoon two months later: They rode bikes around the school's hallways; took photos, played hide-and-seek, and shot baskets (投篮). At one point, Trashaun did get ______ with Jayce. He talked about their left arms. He told Jayce he was perfect. He said not to let anyone's words ______ his confidence.
Since that meeting, Lewis has seen a big difference in her son, who is now seven and in second grade. He _______started wrestling (摔跤) and loves it. Lewis believes it is Trashaun's ______. As for Trashaun, his relationship with Jayce made him look forward to helping more kids.
1.A.weak B.sick C.terrible D.different
2.A.avoid B.choose C.provide D.prepare
3.A.opened up B.turned on C.looked at D.picked up
4.A.near B.with C.like D.from
5.A.watching B.meeting C.copying D.joining
6.A.friendship B.support C.relationship D.confidence
7.A.mad B.serious C.angry D.funny
8.A.shake B.show C.save D.shape
9.A.certainly B.recently C.rapidly D.secretly
10.A.decision B.experience C.position D.influence
—Where can I have my hair cut? All the hairdressers are cloyed at this time.
—________ I often help my niece with her hair.
A.Do it yourself. B.Help yourself.
C.Why don't you wait? D.You can come to me.
—Too bad! I still can't forget the stupid mistake I made in the final.
—Well; well, only time can ________ this kind of bad memories.
A.wash away B.wake up C.pay for D.show off
