阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项。
It’s often recommended to befriend the enemy, but high school freshman Xavier Staubs did more than that. He saved his life.
At a swim meet, the 15-year-old boy rescued a ____ who was struggling under water. It ____ as a regular home meet. Xavier had just completed his relay. ____ he was resting, he suddenly ____ a boy in an adjoining lane was ____. “I heard people screaming, and I see him underneath.” Without ____, Xavier dived back into the pool and ____ the boy out to safety. ____, the boy started breathing on his own.
His ____ actions got the attention of Representative John Moolenaar, who ____ Xavier with a tribute (赞颂) in the Congressional Record.
At lunchtime, Xavier learned the congressman was coming to meet him. Moolenaar wanted to ____ him with a recognition that would be kept in the Library of Congress.
“We heard the story about what he had done. The more I learned about it, the more I thought we really wanted to ____ what he did,” the Congressman told CNN.
“Usually, you heard bad outcomes and ____ situations,” Moolenaar said. “This was such a powerful ____ of one student helping another ____ the two boys were competitors.”
___, Xavier’s mother, Jillian Staubs, said she was not ____.
She arrived at the meet five minutes after the rescue happened. Something in her mind told her that her son was somehow _____.
Staubs said she tries to ____ her children like what her grandmother did. And Xavier performing such a ____ act was something she’s used to hearing about.
Xavier is not only a great swimmer but also a dancer, band member and a straight-A student. And now, a hero.
1.A.classmate B.competitor C.volunteer D.stranger
2.A.took off B.put off C.moved off D.started off
3.A.For B.As C.Since D.Because
4.A.stared B.felt C.noticed D.ignored
5.A.performing B.competing C.drowning D.training
6.A.doubt B.admission C.preparation D.hesitation
7.A.pulled B.rolled C.yelled D.pushed
8.A.Unluckily B.Fortunately C.Sadly D.Honestly
9.A.inspiring B.moving C.heroic D.modest
10.A.observed B.respected C.encouraged D.recognized
11.A.present B.react C.deserve D.judge
12.A.support B.congratulate C.employ D.praise
13.A.amusing B.upset C.pleasant D.surprising
14.A.example B.incident C.relief D.event
15.A.as for B.as though C.even though D.now that
16.A.Therefore B.Otherwise C.Besides D.However
17.A.pleased B.surprised C.delighted D.puzzled
18.A.involved B.threatened C.influenced D.endangered
19.A.raise B.bring C.care D.impress
20.A.determined B.generous C.selfless D.devoted
There are several different types of fire departments. Some hire full-time paid firefighters and some are run entirely by volunteers.1., a firefighter must go through strict physical and academic training to ensure a strong knowledge of fire safety and the physical strength to handle the tasks required by member of a fire department.
Joining a fire department requires that both physical and written tests are passed with scores showing a thorough knowledge of fire safety.2..
The first step in joining a fire department as a paid firefighter is to submit an application as well as acquire the appropriate training. Usually firefighters must have a high school diploma, and some complete two-or-four-year programs in fire science at community colleges and universities. 3., and if a candidate already has connections at a fire department, he may apply for a position straight out of high school.
Once a candidate applies and is accepted for training at a fire department, he must then complete several weeks of training at the department’s training center.4.. When this is done, the candidate is sent to a fire company for a period of probation (实习). He has to continue training in the new position while being directed by experienced firefighters.5.. An application must be submitted to the volunteer fire department, then if the application is accepted, the candidate will take a training program and then be required to pass a physical and written test. Firefighters must also become certified (认证) as Emergency Medical Technicians (EMTs). The level of EMT certification is determined by the individual departments.
A.Although it is demanding
B.Whichever type is desired
C.However, an academic program is not required
D.For volunteer firefighters the procedure is similar
E.But joining a volunteer fire department is totally different
F.Training consists of classroom work and practical training
G.Also, a candidate must be able to respond quickly in emergencies
About four million people worldwide took to the streets on Friday, September 20, 2019, for the Global Climate Strike. The young protestors (抗议者), and their adult supporters, marched along city streets outside government buildings to urge leaders to take action against climate change.
The back-to- back protests are timed to coincide (与……一致) with the United Nations Climate Change Summit in New York City on Monday, September 23, 2019. The meeting is designed to challenge world leaders from 69 countries to discuss steps to handle climate change. The UN hopes their actions will help reduce global carbon emissions by 45% by 2030 and, if all goes well, eliminate them altogether by 2050.
While the strikes are in long-standing anger about the changing environment, the worldwide call for action is closely linked to teenage climate activist Greta Thunberg. The 16-year-old got well-known a year ago after she began spending Fridays outside the Swedish Parliament (国会) building in Stockholm to convince officials to take action against climate change. Her protests have inspired young people worldwide to take action in their cities.
Thunberg, who came from Sweden to New York City in an emissions- free sailboat, was one of the key speakers at the UN Climate Change Summit. On Monday, September 23, the teenager told lawmakers, “You all come to us young people for hope. How dare you? You’ve stolen my dreams and my childhood with your empty words, and yet, I’m one of the lucky ones. People are suffering. People are dying. Entire ecosystems are falling down. So you have to listen to scientists and take immediate measures to help stop climate change.”
While Thunberg and other young climate activists are calling the recent global Climate Strike a victory in terms of its size and reach, they realize it’ ll take time to convince lawmakers to create real change. However, the teenager is hopeful they’ll begin to pay attention as more people of all ages join in the call-to-action.
1.What can we know about the Global Climate Strike from the text?
A.It is to support the un climate Change Summit.
B.It is to raise teenagers environmental awareness.
C.It was led by adults but mainly included teenagers.
D.It was attended by millions of people in the world.
2.What does the underlined word “eliminate” in Paragraph 2 mean?
A.Join. B.Improve.
C.Get rid of. D.Stay away from.
3.What is the third paragraph intended to show?
A.The role that Thunberg plays in the Strike.
B.Thunberg’s contributions to climate change.
C.The importance of the global climate Strike
D.Thunberg’s opinions on the Global Climate Strike.
4.What did Thunberg focus on expressing at the un climate Change Summit?
A.Humans’ carelessness is worsening climate.
B.Humans are suffering due to climate change.
C.Measures need taking to stop climate change.
D.Extreme climate change is drawing attention.
AIDS may be one of the most undesirable diseases in the world. Luckily, there is now hope for AIDS patients.
According to a recent paper published in the New England Journal of Medicine, Chinese scientists have successfully used CRISPR technology - a method of gene editing - to treat a patient with HIV. While it may not have cured the patient fully, it still represents a huge step forward in fighting the disease.
The patient was a 27-year-old Chinese man who was diagnosed with both AIDS and acute lymphoblastic leukemia (急性淋巴细胞白血病), a type of blood cancer. Despite his hopeless 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 used this opportunity to edit 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 CCR5, which encodes a protein that HIV uses to get inside human cells. Without the gene, HIV is unable to infiltrate 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 remission (缓解) 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 - a major concern with past gene therapy experiments.
Amesh Adalja, a senior scholar at the Johns Hopkins Centre 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 (镰刀形细胞性贫血).
“Thanks to this new technology, the goal of a functional cure for AIDS is getting closer and closer,” he said.
1.The technology of CRISPR is to ___________.
A.transplant cells B.encode genes
C.remove proteins D.produce cells
2.What was the result of the treatment?
A.CCR5 and other genes in the patient’s cells were changed.
B.The number of cells infected by HIV decreased.
C.Some of the patient’s blood cells could resist HIV infection.
D.HIV no longer existed in the patient’s cells.
3.What do we know about the experiment?
A.It provided an innovative way to cure AIDS patients.
B.It pointed out the problems of gene therapy.
C.It could offer a safe treatment for blood-related diseases.
D.It’s the first experiment to use gene-editing technology to treat AIDS.
The annual marathon in my town occurred as scheduled. My job was to follow behind the runners in an ambulance in case any of them needed medical attention. As the athletes began to pace themselves, the front runners started to disappear. It was then that my eyes were drawn to the woman in blue running shorts and a baggy white T-shirt.
I knew we were already watching our “last runner”. Her feet were turned in, yet her left knee was turned out. Her legs were so crippled ( 跛足的 ) and bent that it seemed impossible for her to walk, let alone run a marathon.
The driver and I watched in silence as she slowly moved forward. We would move forward a little bit, then stop and wait for her to gain some distance. Then we’d slowly move forward a little bit more. As I watched her struggle to put one foot in front of the other, I found myself breathing for her and urging her forward. I wanted her to stop, and at the same time, I prayed that she wouldn’t.
Finally, she was the only runner left in sight. I sat on the edge of my seat and watched with respect and amazement as she pushed forward with sheer determination through the last miles. When the finish line came into sight, the cheering crowds had long gone home. Yet, standing straight and proud waited a man. He was holding one end of a ribbon tied to a post. She slowly crossed through, leaving both ends of the ribbon fluttering (飘动) behind her.
I don’t know this woman’s name, but that day she became a part of my life — a part I often depend on.
For her, it wasn’t about beating the other runners or winning a prize. It was about finishing what she had set out to do. When I think things are too difficult or I get those “I-just-can’t-do-it,” I think of the last runner. Then I realize how easy the task before me really is.
1.What words can best describe the woman?
A.Proud and determined. B.Strong-willed and honorable.
C.Modest and courageous. D.Diligent and considerate.
2.What has the author learnt from the woman?
A.Don’t depend on others when facing hardships.
B.Nothing is too tough to accomplish if one is brave enough.
C.The disabled can also run a marathon despite their walking difficulty.
D.It’s not winning but holding on straight to the end that really matters.
3.What could be the best title for the text?
A.A Crippled Woman. B.An Unforgettable Job.
C.The Last Runner. D.The Annual Marathon.
听下面一段独白，回答以下小题。
1.Who started talking about running away?
A.The oldest son. B.The middle son. C.The youngest daughter.
2.How did the children react to their mother at first?
A.They were silent. B.They were amused. C.They were upset.
3.What did the daughter say she would turn into?
A.An airplane. B.A boat. C.A car.
4.What happened at the end of the story?
A.The children all went to bed.
B.Everyone had a meal together.
C.The children finally tricked their mother.
