If your mother wants to tell you something, she uses words. Birds cannot talk as we do. But some birds can make sounds to warn their young of danger.
The jackdaw is a kind of blackbirds that lives in Europe. Jackdaws live together. Young jackdaws do not know their enemies. When an older jackdaw sees a dog, it makes a loud rattling sound. The younger birds know this sound means danger is nearby. The sound warns them to know their enemies.
If a young jackdaw is in a dangerous place, a jackdaw parent flies over him from behind. The parent bird flies low over the young bird’s back. The parent’s tail feathers move quickly from side to side, trying to express, “Follow me.” At the same time, the parent calls out, “Key-aw, key-aw. ”The parent mean, “Fly home with me.” The young bird then follows the older one home. Young jackdaws do not have to learn what certain sounds mean. They know the meaning of these sounds from the time they hatch（孵出）.The jackdaw lives in .
| A．Europe | B．Australia | C．America | D．Africa |
Which of the following does this story lead you to believe?
| A．All animal parents can talk to their young. |
| B．Dogs are the most dangerous enemies for jackdaws. |
| C．Young jackdaws know the meaning of their parents’ sound when they grow older. |
| D．Some birds can give information to one another. |
Parent jackdaw can use their tail feathers to .
| A．ask their young to follow them |
| B．play a game with the young |
| C．tell the meal time |
| D．give a warning of a fire |
Everyone has done experiments in high school laboratories, but have you ever thought about designing a satellite to explore space?
On Nov. 19, a team of students from Thomas Jefferson High School for Science and Technology in the US awed peers and even scientists by successfully launching a satellite.
The first satellite designed and built by high school students was sent up into space along with a record-setting. 28 other small ones on a rocket were sent from a NASA center in Virginia, CNN reported. It took the students seven years to build.
The students call their tiny satellite TJ3Sat, which is named after their school. It is just 10x10x12 centimeters and weighs only 0.89 kilograms, according to Orbital Sciences, a company which developed the rocket and supported the students’ project. It can be controlled with a smartphone.
Like most satellites, TJ3Sat can send and receive data. The small spacecraft is equipped with a voice synthesizer (合成器), which can switch text to voice and transmit those sounds back to Earth over radio waves, said Orbital officials. In this case, anyone can give it a try via the project’s website (school website) by submitting (提交) a text. The texts that get approved will be sent to the satellite, changed to voice and then broadcast back to Earth via radio waves.
“I can say ‘Go Colonials’ on our ground station and when it is on the other side of the world, in India, someone can hear ‘Go Colonials’over the radio,” the team explains on the website.
The satellite will stay in space for at least three months.
School principal Evan Glazer told The Washington Post that the project started in 2006 as an activity in the spare time. Later it became a research project for a select group of seniors.
At a time when American students are busy with SATs, the launch of the satellite shows what diligent teenagers can achieve when allowed to pursue their own curiosities, Glazer said.
“It used to be that kids growing up wanted to be an astronaut,” Andrew Petro, program executive (主管) for small spacecraft technology at NASA, said in a statement. “I think we might be seeing kids saying what they want to do is build a spacecraft. The idea here is that they really can do that.”Which of the following statements about TJ3Sat is TRUE according to the article?
| A．It took a group of students about a decade to build the satellite. |
| B．Besides TJ3Sat, 28 other small satellites were built by the students. |
| C．TJ3Sat can receive text messages that the students send into space, which can be changed to voice messages and broadcast back to Earth. |
| D．TJ3Sat is expected to stay in orbit for the next year, sending out messages together with information about its position in space. |
According to the article, the launch of the satellite _______.
| A．is evidence of the advance of spacecraft technology |
| B．proves that hard-working teenagers can achieve a lot |
| C．shows the importance of extracurricular activities at school |
| D．has inspired many people to take an interest in space travel |
You may have seen a talking parrot on a TV show, in a movie, or even in someone’s home. The parrot has learned to copy sounds that people make. Birds are not the only animals that can copy the noises they hear. Dolphins, bats, and some apes also copy sounds. Now we can add elephants to this list of copycats.
Dr. Joyce Poole is a zoologist. She studies the sounds of elephants. While she was in Kenya, she would hear strange noises made by Mlaika after sunset. Mlaika was a 10-year-old African elephant.
Mlaika lived near a highway. Dr. Poole says, “I could not tell the difference between Mlaika’s call and the distant truck noise.” She and other scientists studied Mlaika’s sounds. It turned out that Mlaika was copying the sounds of the trucks driving by. Why would Mlaika copy trucks that she heard going by on the highway? Animals that are able to copy sounds may enjoy practicing new sounds. When they are kept outside of their natural environment, they may copy unusual sounds. That may be why an elephant would copy the sound of a truck.
“Mlaika was not the only copycat elephant,” Dr. Poole says. Calimero is a 23-year-old male African elephant. He spent 18 years with two female Asian elephants. Asian elephants make chirping sounds (sounds made by birds) to talk with one another. African elephants usually do not make chirping sounds. But Calimero now does. He is copying his Asian elephant friends. Dr. Poole says that elephants need to form bonds with their family and friends. She says, “They make sounds to communicate with each other. When they are separated, they use sounds to keep in contact.”
Parrots, dolphins, humans, and elephants show that being a copycat is one way that animals and people make new friends and keep old ones.According to the passage, what does Mlaika copy?
| A．The sound of people. | B．The sound of trucks. |
| C．The sound of Calimero. | D．The sound of birds. |
From paragraph 4, we can know________.
| A．how long it takes for an elephant to learn a new sound |
| B．why the African elephant can make chirping sounds |
| C．why the Asian elephants make noises after sunset |
| D．how Asian and African elephants are alike |
According to the passage, why do some animals like to be copycats?
| A．To keep in touch with nature. |
| B．To please people and other animals. |
| C．To make new friends and keep old ones. |
| D．To avoid the danger from the outside world. |
In 1880, fourteen-year-old Matthew Henson loved to hear sailors tell tales of their exciting lives at sea. The travel, the adventure, the danger, and the steady pay were all attracting young Henson. One day, he found a job as a cabin boy on a beautiful ship called the Katie Hinds. For the next five years, Henson sailed around the world. With the help of the ship’s captain and other members of the crew, Henson learned mathematics, navigation, history, geography, and many other subjects. By the time he left the Katie Hinds in 1885, Henson was well educated and had become an excellent seaman.
Unable to find work anywhere else, Henson took a job in a hat shop in Washington, D.C. One day in 1887, a man came in to buy a hat. The man, Robert Peary, asked the owner if he knew anyone with experience at sea. Peary would soon travel to South America for the U.S. government. He needed experienced men to accompany him. The shop owner knew about his young employee’s skills and experience on ocean journeys, so he introduced Peary to Henson.
Using his map-reading and sailing skills, Henson proved himself to be a worthy and smart seaman. Peary soon made Henson his assistant, and they became close friends. One day Peary told Henson about his real dream: to be the first man to stand on “the top of the world” at the North Pole. He asked Henson to help him make his dream come true. Over the next five years, the two explorers made two trips together to the Arctic. However, they were not able to reach the pole either time. The cold, wind, and ice were worse than either of them had ever imagined.
In 1908, Peary and Henson were ready to make their final attempt at reaching the North Pole. Both men were over forty years old. The years of hardship in the arctic cold had made them suffer a lot. This would be their last chance. With four Inuit guides, they made a mad rush straight across the ice toward the pole. Peary’s feet were injured and he had to be pulled on a dogsled. In April 1909, Henson’s instruments showed they were standing at the North Pole. Together Henson and Peary planted the American flag in the snow.
In later years, Robert Peary and Henson were greatly honored for their achievements. Today, the two friends and fellow explorers lie in heroes’ graves not far apart in the Arlington National Cemetery.In paragraph1, the author shows how Henson became ________.
| A．a skilled seaman |
| B．a highly educated captain |
| C．employed in a restaurant |
| D．interested in helping others |
Paragraph 2 mainly tells us ________.
| A．how Matthew Henson met Robert Peary |
| B．why Matthew Henson went to the hat shop |
| C．why Matthew Henson stopped working on the Katie Hinds |
| D．how Robert Peary knew that Matthew Henson had sea experience |
On their trip to the North Pole, Henson and Peary could best be compared to ________.
| A．treasure hunters seeking big fortunes |
| B．generals seeking power over another country |
| C．soldiers going to war to fight for their freedom |
| D．fighters performing a task in an unknown land |
Rock Junket is The Original Rock n’ Roll Walking Tour of New York City. Rock Junket founder Bobby Pinn is an author, former rock radio personality, rock historian and he’s spent 17 years as a music executive (总监). Read the reviews, book the best and forget the rest!
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 Check availability and buy tickets online: |
| East Village Rock Tour - #1 seller - Monday thru Saturday Greenwich Village Rock Tour\ - Sunday Union Square Rock Tour - Tuesday and Thursday Beatles Tour Customized (定制的) Tours Advance purchase required as Tours sell out quickly Purchase by phone at (212) 290-3370 |
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| Group and Private Tours Available – for details click here or call (646) 515-7874 |
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Rock Junket Walking Tours are not only the perfect way to dig deep into New York’s rock scene but also learn about art, fashion, rock n’ roll clothing stores and great local bars and restaurants. The East Village Rock Tour is very popular as we demonstrate how the neighborhood went from poor to being the birthplace of punk rock. On The Greenwich Village Rock Tour we’ll look at the influence Bob Dylan had on the Village plus sites about Jimi Hendrix and The Animals. We cover lost of clubs also including Café Wha, Bitter End, and other. The Union Square Rock Tour details the immoral behavior of Max’ Kansas City, Webster Hall. Andy Warhol and his 2nd and 3rd Factory, a famous Clash album cover and much more. The Beatles Tour takes us through Midtown and Uptown as we explore the sites that gave birth to Beatlemania (披头士狂热). Our Customized Rock Tours have been booked and loved by schools, universities, writers, museum curators (馆长) and many others.If you want to join in the Rock Junket’s activities, you must ________.
| A．has a gift for music |
| B．read online reviews |
| C．wear rock n’ roll clothes |
| D．buy a ticket in advance |
Which of the following is most popular among student groups?
| A．The East Village Rock Tour |
| B．Greenwich Village Rock Tour |
| C．Customized Rock Tours |
| D．Union Square Rock Tour |
Reducing the amount of salt in our diets could save nearly 20,000 lives in the UK every year, according to researchers.
The recommended maximum daily intake for adults is 6g in the UK, although just month the World Health Organization (WHO) revised this down to 5g. Yet according to figures from the British Heat Foundation, men consume around 9.7g a day, while women have 7.7 g.
| Fast food |
Salt Content |
| Original chicken |
2.9g per portion (份) |
| Spicy crayfish |
3.5g per portion |
| Large chips |
1 per portion |
| McDonald’s Big Mac |
2.1 per portion |
Not researchers at three universities, including Harvard Medical School, have revealed the dramatic effect reducing salt could have on death rates by using computer models. They estimated that reducing salt intake to 6g would save 500,000 to 850,000 lives in the US over the next decade.
British doctor Ian Campbell, medical director of charity Weight Concern, told Mail Online: Salt is a big problem in the UK, too. It’s a silent killer. Over time consuming too much of it increases the risk of high blood pressure, which can lead to heart attacks. About 80 percent of our salt intake comes from processed foods, so it can be difficult to avoid.
Many people are unaware of where salt is hidden, such as bread, soups, ready meals, and even breakfast cereals (麦片). The government approach has been to encourage food companies to cut the amount of salt in their products. There has been a reduction but it is taking too long. The Food Standards Agency should consider setting compulsory maximum levels for salt.
Victoria Taylor, Senior Dietitian at the British Heat Foundation, added: Eating too much salt may raise your blood pressure and having high blood pressure increases your risk of developing heart disease.
The government has worked with the food industry to reduce the amount of salt in our food and make labels clearer. But there is still work to be down by everyone because the majority of Brits are still consuming more salt than they would be.Which of the following in the table reaches the daily maximum amount of salt recommended by the WHO?
| A．A large chips and a McDonald’s Big Mac. |
| B．A spicy crayfish and a large chips. |
| C．An original chicken and a spicy crayfish. |
| D．A McDonald’s Big Mac and an original chicken. |
According to the passage, when people eat processed food they ________.
| A．needn’t add salt |
| B．should add a little salt |
| C．may ruin their health |
| D．can have risk of heart attacks |
To solve the problem of eating too much salt, Ian Campbell advises ________.
| A．having healthier breakfast |
| B．punishing the illegal food companies |
| C．reducing the amount of processed food |
| D．making laws about maximum levels for salt |
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