Audubon Animated

January 25-May 31

This fantastic exhibit brings to life artist John James Audubon's Birds of America. Enter “The Audubon Experience” video room and find yourself surrounded by a virtual swamp and forest where Audubon's painted birds are brought to life through motion and sound. View rare selections from the Bell's Birds of America elephant folio. Flex (活动） your creative and observational muscles in a “Draw like Audubon” hands-on sketching activity.

Star Parties

Monthly: January 31, February 28, March 13, April 3, May 1

Have you looked at the rings of Saturn? The moons of Jupiter? Explore the sky with the Bell! Free, informal telescope observing nights are informational and fun for the whole family. Bell staff will guide you through observations of the same celestial (天空的） objects that have inspired sky-gazers throughout history!

Space Fest

February 1 and 2

Join us for our annual festival of the cosmos! We'll be celebrating the many women in space science and their contributions to the field. There will be special guest speakers, science demonstrations, special planetarium (天象馆） shows, and hands-on astronomy activities all weekend long.

Bell Summer Camps

Adventures for the promising scientist in your life

Camps go on sale to Bell members on Saturday, February 8, for an exclusive week's pre-sale and discounts of $ 30/ camp on full-week registration.

Bell camps offer kids in kindergarten-8th grade a fun and enriching environment that encourages them to explore their scientific passions as well as new subjects. Our camps include hands-on activities, planetarium visits, games, creative activities, field trips to see researchers and labs around the University's Twin Cities campus, and much more!

【1】Which of the following can you do at Audubon Animated?

A.Drawing birds.B.Taking field trips.

C.Observing the night sky.D.Watching a science demonstration.

【2】What event would you go to if you want to celebrate women in space science?

A.Audubon Animated.B.Star Parties.C.Space Fest.D.Bell Summer Camps.

【3】When should you buy tickets for Bell Summer Camps to save money?

A.On January 25.B.On February 1.C.On February 8.D.On March 13.

A young man had bought an old house that was in bad shape, but he and his wife believed they could restore it. They immediately went to work. Their goal was to have the old building look best for New Year’s Eve get-together.

Just two days before New Year, however, a storm swept through the area, leaving a hole in the wall of the house. There was obviously no time to repair the damage before New Year. Then, the sad couple attended a local auction(拍卖)that afternoon. One of the items put up for bids was an old gold-and-ivory-colored tablecloth. Seized by an inspiration, the young man was the highest bidder at $ 6.50. His idea was to hang the cloth to cover the ragged hole.

On the day before New Year, it was snowy. As the young man unlocked the house door, he noticed an old woman standing at the bus stop. He knew the bus wouldn’t be there within at least half an hour, so he invited her inside to keep warm.

When the woman walked in and saw the tablecloth, she rushed at it and said excitedly, “It’s mine. It is my tablecloth.” She told the surprised man its history and even showed him her name in one comer of the tablecloth. She and her husband had once lived in Vienna, Austria, and their village was hit by a deadly disease. So they decided to flee to Switzerland, but her husband told her to leave first, saying he had something urgent to deal with. A few days later, it was reported that the bus her husband took fell off the cliff(悬崖)and he was never to be found. Her husband was believed to have died. Touched by her story, the young couple asked about her address, planning to send the tablecloth to her after New Year. As the bus came, she left.

In the candlelight of New Year’s Eve, the tablecloth looked even more beautiful. As the man’s friends left the house, they thanked the man for his arrangement and mentioned how beautiful the house looked.

注意：

1. 所续写短文的词数应为150词左右；

2. 至少使用5个短文中标有下划线的关键词语；

3. 续写部分分为两段，每段的开头语已为你写好；

4. 续写完成后，请用下划线标出你所使用的关键词语。

Paragraph 1：

Otte old gentleman stayed, admiring the tablecloth.

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Paragraph 2：

The young man drove the old man to that old woman’s home.

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

【2】, maybe even something fairly significant, about your parents' religious or ethnic (种族的） background, their level of income or education, maybe even their politics. From what we can tell, your name is not your destiny (命运）. The story goes that two brothers in New York were named Loser and Winner by their parents. Loser turned out to have a great life as an upstanding citizen. He was a police detective. 【3】 .

Just think about it for a minute. 【4】 -your intelligence, your taste, your health, your work morals and decision-making-to say nothing of luck.

Now, considering all of those heavyweight forces, how much could something as surface as a name really affect your life's outcome? 【5】 , it isn't that hard to change it.

A.Your life is determined by yourself

B.And Winner had been a career criminal

C.A name contains a rich set of information

D.Think about all the things that make you

E.It is true that your name may tell the world something

F.Plus which: if you really think your name is holding you back

G.And part of what makes each of our kids special is the names we give them

1. 活动时间、地点；

2. 鸣鹤年糕的特点；

3. 表达你的期望。

注意：1. 词数80左右；

2. 可以适当增加细节，以使行文连贯。

Dear Robert,

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Yours,

Li Hua

1. 中国茶文化简介（四千多年历史，饮茶是一种休闲方式）；

2. 饮茶的好处；

3. 邀请他来中国体验茶文化。

注意:1.词数100左右；

2. 邮件开头和结尾已为你写好，不计入总词数；

3.可以适当增加细节，以使行文连贯。

Dear Jack,

I’m glad to hear from you.

_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Yours,

Li Hua

When Albert was five years old, his father gave him 【1】 compass. Albert was filled with wonder when he discovered that the compass needle always pointed in the same 【2】 (direct) ---the north. He asked his father and his uncle 【3】 caused the needle to move. Their 【4】 (answer) were difficult for Albert to understand. Yet he spent a lot of time 【5】 (think) about them. He said later that he felt something must 【6】 (hide) behind things.

Albert didn't like school. The German schools of that time were not pleasant. Students couldn't ask questions. Albert said he 【7】 (feel) as if he were in prison.

One day Albert told his uncle Jacob how much he hated school, 【8】 (especial) mathematics. His uncle told him to solve mathematical problems by pretending 【9】 (be) a policeman. 'You are looking 【10】 someone, ' he said, 'but you don't know who he is. Call him X. Find him by using your mathematical tools. '

Albert learned to love mathematics. He was studying the complex mathematics of calculus while all his friends were still studying simple mathematics.

Can you tell the time on an analog clock? 【1】 (hope), you can! It’s the only way for you to know the time when 【2】 (take) exams.

However, some high schools in the UK will remove analog clocks 【3】 exam halls and use digital.【4】 instead. The reason is that 【5】 (teenage) are unable to read the correct time on analog clocks. They are used to seeing the time on the phone, 【6】 on the computer. Nearly everything they’ve got is digital.

Teachers want their students to feel as 【7】 (relax) as possible during exams. However, having a 【8】(tradition) clock in the room could make students feel stressed out during an exam Many of them might raise their hands to ask 【9】 time it is.

The schools are trying to make everything as easy and straightforward as possible for students during the exams. Another advantage of using digital clocks 【10】 (be) that students are less likely to get the time wrong.

The patient was a 27-year-old Chinese man who was diagnosed with both AIDS and acute lymphoblastic leukemia, a type of blood cancer. Despite his bleak situation, doctors offered him a glimmer of hope: a bone marrow (骨髓) transplant to treat his cancer and an experimental treatment for his HIV.

They edited the DNA in bone marrow stem cells from a donor before transplanting the cells into the patient. Specifically, the treatment involved using the gene-editing tool CRISPR-Cas9 to delete a gene known as CCRS, which encodes a protein that HIV uses to get inside human cells. Without the gene, HIV is unable to enter cells. Talking about the gene, lead scientist Deng Hongkui told CNN, “After being edited, the cells-and the blood cells they produce-have the ability to resist HIV infection.” Nineteen months after the treatment, the patient’s leukemia was in complete relief and donor cells without CCR5 remained, according to the research paper.

Though the transplant did not cure the man’s HIV, it still showed the effectiveness of gene-editing technology, as there was no indication of any unintended genetic alterations (改变) -a major concern with past gene therapy experiments.

Amesh Adalja, a senior scholar at the Johns Hopkins Center for Health Security in the United States, who was not involved in the study, praised the treatment. “They did a very innovative experiment, it was safe,” he told Live Science. “It should be viewed as a success.”

Deng believes gene-editing technology could “bring a new dawn” to blood-related diseases such as AIDS and sickle cell anemia. Thanks to this new technology, “the goal of a functional cure for AIDS is getting closer and closer,” he said.

【1】How did the new treatment fight against HIV?

A.By preventing HIV from entering cells.B.By changing the structure of HIV.

C.By removing a protein that HIV feeds on.D.By identifying and killing HIV.

【2】What was the result of the treatment?

A.CCR5 and other genes in the patient’s cells were changed.

B.Some of the patient’s blood cells could resist HIV infection.

C.HIV could no longer get into the patient’s cells.

D.The donor cells without CCR5 disappeared finally.

【3】What do we know about the experiment?

A.It has provided an innovative way to cure AIDS patients.

B.It pointed out the problems of gene therapy for AIDS.

C.It’s the first experiment to use gene-editing technology to treat AIDS.

D.It could offer a safe treatment for blood-related diseases.

Most of us start to notice our first grey hairs by the time we hit our thirties. A general rule to go by is that by the age of 50, half of the population will have lost the color in 50 percent of their hair.

But why does it happen? Firstly, we need to understand how hair gets its color.

Your hair is made up of cells called melanocytes (黑色素细胞) which produce pigments (色素) as they grow into the hair fiber. There are two different types of melanins: eumelanins and pheomelanins. The former produces black and brown pigments, while the latter produces red and yellow pigments. The exact amount of these pigments decide whether a person has black, brown, blonde or red hair.

As we age, the ability of the melanocytes to produce more pigments weakens. That's because our hair grows in different periods.

The growing period lasts between three and five years, after which our follicles (毛囊) turn off for about three months to rest and get ready to grow more hairs. This goes round and round and, after a time, our bodies aren't as good at producing new hairs.

Scientists are continuing to try and find ways to prevent greying hair. A team of scientists in France is working to try and stop the melanocytes from being damaged at the end of each hair cycle. They are trying to use a special enzyme (酶) to protect the cells from damage. If successful, it could lead the way for new products that keep our hair full of color for years to come.

【1】What does the phrase 'an old wives' tale' in Paragraph 1 probably mean?

A.A wrong beliefB.A useful talk

C.A scientific ruleD.A helpful experience

【2】What do we know about red hair?

A.It doesn’t turn grey as people get older.

B.It contains more pheomelanins than eumelanins.

C.The amount of pigments in it doesn't change over time.

D.People with red hair have weaker ability to produce pigments.

【3】What do the French scientists aim to do?

A.To repair damaged hair follicles.

B.To protect hair cells against damage.

C.To shorten the hair cycle to protect the hair.

D.To study the relationship between health and hair color.

【4】What can be a suitable title for the text?

A.Grey Hair: a Symbol of Huge Pressure.

B.Grey Hair: a Symbol of Declining Health.

C.Cells: the Cause of New Hair Growth.

D.Cells:the Cause of Color Change of Hair.

Goodenough, born in 1922, identified and developed the key materials that can power portable electronics, leading to the wireless revolution. Today, batteries containing Goodenough’s innovations are used worldwide for mobile phones, power tools, laptops, tablets and other wireless devices, as well as electric vehicles.

Goodenough received a bachelor’s degree in mathematics from Yale University and a doctorate in physics from the university of Chicago. He beat the odds against him, first overcoming dyslexia (阅读困难症) as a child, and then the claim of a teacher who told the doctoral student in his 20s that he had started too late to be successful in physics.

He began his career in 1952 at the Massachusetts Institute of Technology’s Lincoln Laboratory, where he laid the groundwork for the development of random-access memory (RAM) for the digital computer. After MIT, Goodenough became a professor and head of the Inorganic Chemistry Laboratory at the University of Oxford where in 1979 he discovered it would be possible to store energy in rechargeable batteries through lithium cobalt oxide (锂钴氧化物).That discovery helped develop the lithium-ion battery. Goodenough joined the University of Texas at Austin in 1986, where his groundbreaking work continued.

At 97 years old, he still continues to push the boundaries of materials science. Despite the lithium-ion battery being well developed and available as a commercial product, it has its limitations. It can’t be charged too fast or overcharged. Goodenough still wants to see some new developments.

“I hope Ut-Austin still keeps me employed,” Goodenough once joked.

【1】The underlined phrase “beat the odds” in Paragraph 3 means “ “.

A.become very famousB.face the challenges

C.win the competitionD.overcome the difficulties

【2】What can we infer from the passage?

A.In MIT, Goodenough made the important discovery leading to the development of the Lithium-ion battery.

B.When he studied for his doctorate in university, not all his teachers encouraged him to be successful.

C.According to the Nobel Committee, Goodenough made the greatest contributions in the discovery.

D.Because of his old age, Goodenough found it difficult to improve the limitations of the lithium-ion battery.

【3】What is the best title for the text?

A.The Father of the Lithium-ion Batteries.B.Three Scientists are Awarded the Nobel Prize.

C.Make the World “Good enough”.D.It’s Never too Old to Learn.