It snowed ________ (大) for three whole days.
We haven't decided which clubs or ________ (协会) to join.
All the flights have been ________ (取消) because of the bad weather.
Forest fires take place in the forest, because there are so many trees to burn. 1. Other types of wildfires include grass fires, brush fires, and hill fires.
The major cause of forest fires is human activities. This can be carelessness such as not putting out a campfire or dropping a lit cigarette (香烟). It may also be caused by setting a fire on purpose. 2. The number one natural cause of fire is lightning.
3. They can be very large in size. They can move over 6 miles per hour and can jump over rivers and roads.
Modern firefighters are well trained and know how to control forest fires. 4. Firefighters will often remove the trees and grass in a long line ahead of where the fire is going. This line is called a firebreak. When the fire reaches the firebreak it stops. 5. These airplanes can carry thousands of gallons of water to drop on hard to reach areas of the fire.
A.Forest fires can be very difficult to put out or control.
B.Billions of dollars are spent every year fighting fires in some countries.
C.Sometimes firefighters will use airplanes to drop water on fires from the air.
D.Forest fires are a type of wildfire.
E.A strong wind can help a fire to spread and move quickly:
F.Around 80% of forest fires are caused by humans.
G.Firebreak is one of the best ways to stop a fire.
One day, three of my friends came to our house.
They told me they wanted to go to Africa. They asked me if I wanted to go with them. I said, "Yes, I want to go with you."
We started to prepare all the necessary things for the journey. Soon we were ready to go. I said goodbye to my wife and we started our journey. Our plan was to be back in two months.
We left Brazil on the first of September, 1655. Our ship was very big but we were only seventeen men. The ship was full of things for business. We had cups, glass, mirrors, knives and other products.
At the beginning of our journey the weather was very good, but very hot. In one week, a hurricane (飓风) came and it was threatening our ship for the next twelve days. After the hurricane passed, we saw we went quite far from our original (原来的) journey and were instead close to the northern part of Brazil near the Orinoco River. The ship was badly damaged, so we could no longer go to Africa.
The captain wanted us to go back and repair the ship, but I strongly disagreed with him. We went over the maps and decided the best thing to do was to go to Barbados and repair the ship there.
When we started this short trip, a second hurricane came. The next morning one of the sailors cried out, "Land?" and at that moment the ship stopped in shallow (浅的) water. We expected the ship to break apart at any moment because of the strong wind, so we all got into the small boat the ship carried. This was very dangerous because the seventeen of us were crowded in the boat, and it had no sail.
The waves were very big. The wind was extremely strong. The wind pushed us to big rocks. We knew the crash was close.
Suddenly, a huge wave appeared and overturned the boat. I was covered with water and couldn't breathe. I couldn't see tile others or the boat. But I saw a little beach between the rocks.
Another wave carried me to the beach. I tried to get up. I tried to go further froth the sea. I was able to move ten metres up. I was safe. But my arms and legs were very weak. I fell down and I was lying on the beach.
1.Why did the writer and his friends go to Africa?
A.To leave their wives. B.To earn some money.
C.To send things to Africa. D.To travel around Africa.
2.What did they do after the first hurricane passed?
A.They had to go back to the place where they started.
B.They studied the map and found a new way to Africa.
C.They headed for the nearest place to repair their ship.
D.They lost their way on the sea and gave up their ship.
3.Which is NOT the reason for the boat becoming dangerous?
A.Shallow water. B.No sail. C.Crowded men. D.Big waves.
4.Which of the following shows the right order of the event?
① The ship changed the direction after the hurricane.
② All the men escaped to the boat but it turned over.
③ The writer was washed up on tile beach by a wave.
④ The ship left Brazil with seventeen men on board.
⑤ The strong wind almost broke the ship into pieces.
A.④⑤①②③ B.④①②⑤③ C.④①⑤②③ D.④②①⑤③
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
