High above Earth， more than a hundred weather satellites （卫星） are collecting information． They send pictures of cloud patterns to scientists on Earth． They also take measurements （测量） of weather conditions， such as air temperature， air pollution and lightning strikes． The meteorologists study the pictures． They make mathematical models using the measurements． The models can help meteorologists make forecasts． The models forecast how， when and where the weather will change in a few hours or in several days． They might forecast （预测） rain in your area tomorrow． If so， you might decide to take your umbrella to school．
More important， weather forecasts tell when bad weather is on the way． Floods， tornadoes， thunderstorms， and hurricanes put people in danger． Weather forecast can save lives． For example， satellites pictures taken over time show how fast a hurricane is growing and the path it is taking． People can be ready for the storm． Meteorologists are always working to make better forecasts．
The United States began using weather satellites in 1960． Today's satellites take clearer pictures and collect more information． Satellites collect information about cloud systems． They have a bird's-eye view of smoke from wildfires and of ash clouds from volcanoes （火山）． Weather satellites can also follow an oil spill on the ocean's flow． They can watch a cloud of sand blowing from a desert in Africa． Information from weather satellites is sent to supercomputers． These computers are huge， and they make mathematical models quickly．
Planes and ships need to know the weather so they can go around dangerous storms． A weather satellite can also help a ship in trouble． The satellite is part of a search and rescue （救援） system． The satellites can send a warning from the ship in danger to the U．S． Coast Guard． The Coast Guard can send out a rescue team．
1.A meteorologist in the first paragraph is a weather ______ ．
A.model B.satellite C.scientist D.pattern
2.What can we learn from the passage？ ______
A.Smoke or ash could hardly influence weather on earth．
B.Weather satellites are never more than forecasting bad weather．
C.Weather forecasts are of little importance to people's safety．
D.Modern weather satellites are looking for a wider use in weather forecast．
3.What can we infer from the passage？ ______
A.Weather forecast is widely used in every field of humans' life．
B.Weather satellites from the US are the most amazing and useful in the world．
C.Weather forecast would be different without computer or supercomputers．
D.Weather forecast would influence people more greatly as technology develops．
4.What may be the next paragraph about？ ______
A.Many planes fall into the ocean because of natural disasters．
B.Few ship accidents are avoided with the help of weather satellites．
C.No accidents take place with the search and rescue system．
D.More rescue teams around the world work together to save endangered ships．
That morning， we noticed a cab following Sir Henry and Dr．Mortimer in London． But who？
We went to Sir Henry's hotel． Holmes asked Dr． Mortimer if anyone with a black beard lived in or near Baskerville Hall．
"Yes，" said Dr．Mortimer，"Barrymore．"
"We must send a telegram to check whether Barrymore is in London or at Baskerville Hall，"said Holmes．
Sir Henry said he wanted to go to Baskerville Hall．
"OK"， said Holmes． "But you mustn't go alone． Watson can go with you．"
Sir Henry and I agreed to take the 10：30 train on Saturday．
Holmes thought deeply on the way home： the story of the Hound， Sir Charles's death， the strange letter， the missing boot and the black-bearded man． He sat in his room all afternoon， smoking and thinking．
Just before dinner， a telegram arrived． It said，"Barrymore is at Baskerville Hall．"
"That becomes a dead end， Watson． We will have to look for another way to go forward．
Just then the door bell rang． It was the cab driver who drove the man with the black beard． "I got a message that you are asking for me"， he said． "I've never had a complaint． I came here to ask you what you had against me! "
"No， no，" said Holmes． "Instead， I'll give you money if you tell me about the man in your cab this morning． He watched this house at 10：00 and then told you to follow the two gentlemen．"
The driver looked surprised and then answered，"The man said he was a detective（侦探） and that I shouldn't tell anyone about him． "
"It's serious， my friend， and you may be in trouble if you refuse to answer．" "His name，" said the driver， "was Sherlock Holmes．"
I'd never seen Holmes more surprised． Then he laughed． "He scored against me that time， Watson．"
The driver told us everything he knew． Holmes gave him the money and sent him away． "This is a dangerous enemy （敌人）， Watson．"
-Taken from The Hound of the Baskervilles
1.According to the passage， the underlined phrase "dead end" in Paragraph 10 means ______ ．
A.Holmes wanted to give up solving the case
B.the road in front of Baskerville Hall was closed
C.the cab driver didn't find his way and turned round
D.they didn't know who the man with a black beard was
2.According to the passage， we can know that the cab driver ______ ．
A.was as dangerous as the black-bearded man
B.received a complaint from the black-bearded man
C.didn't know why Holmes asked for him at the beginning
D.didn't tell Holmes anything about the black-bearded man
3.Which of the following is the correct order according to the passage？ ______
a． Holmes received the telegram．
b． The cab driver came to see Holmes．
c． Watson was asked to go with Sir Henry．
d． Holmes was surprised and then laughed．
e． Watson and Sir Henry took the 10：30 train．
A.cabde B.ceabd C.abcde D.acebd
Many people might think that if they had more money， then they would be happier in life． For example， people might look at what others have， like expensive clothes or nice cars， and wish they could have the same． But the things that money can buy can not bring happiness to a person for long．
① But is that really true？ Studies have found that money can， in fact， make people happier．②Instead， it's giving money to others that makes people happy．③It could be buying a present for a friend or a family member．④It could be buying a homeless person food to eat． It could be giving money to a person in need． Just think about the last time you used your own money to do something for someone else． How did you feel？ Whether it is a small or large amount of money． People feel happier when they give． This is because making someone else happy makes the giver happy， too．
This idea of joining your happiness to the happiness of others is described as a ubuntu in an African language． There is even a story about a man visiting Africa who asked some kids to race to a nearby tree． The first child to touch the tree would get a sweet treat． Surprising， all the children held hands and ran together． They all touched the tree at the same time． The man asked why they had done this． The children just said they could only enjoy eating the treat if everyone had one．
1.Where can we best put "But its not having money that brings happiness．" in Paragraph 2？ ______
A.① B.② C.③ D.④
2.Why does the writer quote（引用） a story in Paragraph 3？ ______
A.To explain Africans like sweets． B.To show examples are not enough．
C.To make the writer's opinion clearer． D.To express happiness is from children．
3.What does the writer try to tell us？ ______
A.Buying new things can make people happy．
B.The key to happiness is making others happy．
C.If you want to be happy， you can visit Africa．
D.People who have a lot of money might not be happy．
The way to see water's temperature Here's how to tell whether a glass contains（容纳）hot water or cold water-without ever touching it！ | ||
You'll need •2 drinking glasses that are exactly alike
•Ice cubes（块）
•Adult helper •Bathtub（浴缸）or shower •Pencil and paper
| 1.Fill one glass with cold tap water and cool it with ice cubes. Don't use a lot of ice; just cool it a little.
2.Fill the other glass with very hot water.
3.Pour both glasses out into the tub at the same tirme and speed. Repeat this process（过程）a fewtimes，and watch closely each time.
4.Ask your helper to fill the glasses again and not tell you which is which. When you see the water splash in the tub.guess which one is the hot water. 5. Repeat several times. Keep score on your paper. You should be able to guess correctly more than half the time. | |
| ||
Cold water is more dense（稠密的）than hot water.so a cup of cold water is just a little bit heavier than a cup of hot water. |
When you pour hot water onto a hard surface，it splashes（溅起）around more than the cold water because it's less dense. SOURCE:TNS | |
1.Where can you find such a picture？ ______
A.A news report B.A story book
C.A comic D.A science poster
2.What can we learn from the picture？ ______
A.You can do it without others' help．
B.At least two different drinking glasses are needed．
C.Cold water seems much heavier than hot water．
D.You don't have to touch the water to find it's cold or hot．
3.What is the way to see temperature according to the picture？ ______
A.By watching． B.By weighing． C.By feeling． D.By guessing．
Growing up is hard for everyone． We all face lots of stress as teenagers． Now_________facing all of that stress while being in the spotlight （聚光灯）．
That's_______Canadian singer Justin Bieber had to deal with as he grew up． He was first_______by a music producer when he was just 13 years old． He became a superstar within just a few years， selling millions of albums and touring the world．But at the time of his success， he is also fighting with mental （精神上的） illness and drug abuse （药物滥用）．
However，it seems that he has put these troubles_________him． Bieber recently wrote a post （帖子） on Instagram， saying that growing up in the spotlight was indeed quite_________．
"I went from a 13-year-old boy from a small town_________being praised left and right by the world …I made every bad decision you could have thought of and went from one of the most loved people …to the most _______ person in the world，" he wrote． He said it was his wife_______ helped him turn his life around．
Bieber is not the only one who has faced stress from becoming_________at a young age． Actors Edward Furlong and Macaulay Culkin saw their lives take a downward turn after they succeeded in Hollywood during their childhoods．
Why did they experience this？ "Childhood is about finding out who you are and being able to relate to （与……相处） others， and those things are harder to learn when you're famous． That amount of public watch makes________hard for kids to do that，" scientist Eileen Kennedy-Moore told USA Today．
1.A.advise B.remember C.notice D.imagine
2.A.how B.what C.which D.who
3.A.discovered B.impressed C.met D.developed
4.A.around B.inside C.behind D.among
5.A.personal B.worrying C.challenging D.powerful
6.A.to B.into C.against D.without
7.A.trusted B.hated C.connected D.devoted
8.A.which B.whom C.what D.that
9.A.famous B.important C.valuable D.different
10.A.him B.that C.it D.them
--- I love the Internet．I have come to know many friends on the Internet．
--- ______． Few of them could become your real friends．
A.I can't agree more B.It couldn't be worse
C.That's for sure D.That's not the case
