1.阅读理解

Song Chunfang still remembers his teacher Yuan Longping, known as the "father of hybrid rice," telling them to speed up the promotion of hybrid rice in Madagascar before their trip to the country in October 2020.

Yuan Longping, famous for developing the first high-yield hybrid rice strain capable of eliminating (消灭) hunger for large numbers of people, died of organ failure at 91 on May 22, 2021.

In April 1979, Yuan presented his paper to an international academic conference on hybrid rice in Manila, sharing China's experience in hybrid rice research with the rest of the world. Over four decades, research teams working on hybrid rice have been promoting the technology overseas. So far, Yuan's hybrid rice has been grown in more than 60 countries, with a total growing area of 8 million hectares (公顷) outside China, according to the China National Hybrid Rice R&D Center where Yuan worked.

Established in Madagascar in 2019, the African sub-center is the only overseas sub-center of China's national hybrid rice engineering technology research center, and it is functioning well. Chinese experts in the sub-center set up a service chain including providing seeds, relevant training and technical guidance. More than 100 skilled local trainees were given online courses to become hybrid rice experts who can better serve the needs of local farmers. So far, the sub-center has approved three hybrid rice varieties in Madagascar, with two other varieties suitable for growing in most regions of the country expected to gain approval this year.

(1) Why was Yuan Longping known as the "father of hybrid rice"? A. Because he sped up the planting of hybrid rice. B. Because he promoted the first hybrid rice strain. C. Because his hybrid rice eliminated people's feeling of hunger. D. Because he contributed greatly on hybrid rice development.
(2) Paragraph 3 mainly tells about                 . A. Yuan's effort in promotion of hybrid rice overseas B. the global hybrid rice development in the past C. rice-growing area distribution outside China D. the influence of Yuan's paper on hybrid rice
(3) What can we learn from the African sub-center? A. It is a company selling rice-growing technologies. B. It functions well in promoting China's hybrid rice. C. It teaches local farmers to grow rice directly. D. It has altogether five rice varieties to approve.
(4) The author wrote this passage mainly to                    . A. tell Yuan Longping's contribution B. report Yuan Longping's death C. present hybrid rice's achievement D. show African sub-center's success
【考点】
推理判断题; 细节理解题; 段落大意; 故事阅读类; 记叙文;
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1. 阅读理解

New research has found that young adults who smoke both tobacco cigarettes and e-cigarettes appear to have a higher risk of stroke than those who only smoke tobacco.

Carried out by researchers at George Mason University, the new study looked at 161 ,529 participants aged 18 to 44 years of age, who were surveyed about their cigarette and e-cigarette use.

The researchers also calculated the participants' risk of experiencing a stroke, taking into account factors such as how much participants smoked, high blood pressure, diabetes, cholesterol levels, body mass index and physical activity levels.

The findings, published in the American Journal of Preventive Medicine, showed that the participants who smoked cigarettes and used e-cigarettes were nearly two times more likely to have a stroke compared to current cigarette-only smokers, and nearly three times more likely than non- smokers.

The team also found that participants who used only e-cigarettes had a lower risk of stroke than those who smoked only tobacco cigarettes. In fact, those who used e cigarettes on their own did not have a significantly greater risk of stroke than nonsmokers.

However, the researchers failed to find any clear benefit from switching from cigarette smoking to using e- cigarettes,even though many people believe that e- cigarettes are a "healthy" alternative to cigarettes, and a way to help smokers kick the habit. They also noted that the nicotine dependence and toxicity associated with e-cigarettes is worrying, particularly among young adults who smoke them for fun and the range of flavors.

"It's long been known that smoking cigarettes is among the most significant risk factors for stroke. Our study shows that young smokers who also use e-cigarettes put themselves at an even greater risk," explained lead investigator Tarang Parekh, MBBS, MSc."This is an important message for young smokers who perceive e- cigarettes as less harmful ones and consider them a safer alternative. We have begun understanding the health impact of e-cigarettes and concomitant cigarette smoking,and it' s not good."

"Our findings demonstrate an additive harmful effect of e-cigarettes on smokers' blood vessels, hearts and brains,"explained Parekh.

"Consider this study as a wake-up call for young vapers, clinicians, and healthcare policymakers. There is an urgency to regulate such products to avoid economic and population health consequences and a critical need to conduct further research on the benefits and risks of smoking cessation alternatives," warned Parekh.

(1) What does the text belong to? A. A science fiction. B. A news report. C. A short story. D. A public announcement.
(2) What can we know about the participants? A. A few elderly people were surveyed. B. Some of them are non smokers. C. All of them use cigarettes and e-cigarettes. D. They have a lower risk of stroke than others.
(3) What does the underlined word "perceive" in Paragraph 7 mean? A. think B. practise C. predict D. receive
(4) What did the the new research find? A. Smoking cigarettes is among the most significant risk factors for stroke. B. E-cigarettes are a "healthy" alternative to cigarettes. C. Smoking both tobacco and e-cigarettes can make young adults at an greater risk of stroke. D. It is beneficial to switch from cigarette smoking to using e-cigarettes.
阅读理解 未知 普通
2.阅读下列短文,从每题所给的 A、B、C、D四个选项中选出最佳选项。

Deep below the ground, radioactive elements break up water molecules(分子), producing substances that can fuel subsurface life. This process, known as radiolysis(辐射分解),has supported bacteria in tiny cracks filled with water on Earth for millions to billions of years. Now a study published in Astrobiology shows that radiolysis may have supported life in the Martian subsurface. 

Dust storms, rays in the universe and solar winds ruin the Red Planet's surface. But below, some life might find shelter. "The best survival habitat on Mars is the subsurface," said Jesse Tarnas, a planetary scientist at NASA, Examining the Martian underground could help scientists learn whether life existed there. And the best subsurface samples available today are Martian meteorites(陨石) that have crash-landed on Earth.

Tarnas and his colleague looked at the minerals on the Martian surface and how many radioactive elements there were, using satellite and rover data, They used computers to simulate(模拟) radiolysis to see how efficiently the process would have generated life-supporting hydrogen gas and other chemical substances. They reported that if water was present, radiolysis could have supported life for billions of years and perhaps still could today. 

Scientists had previously studied Mars radiolysis, but this marked the first estimate using Martian rocks to see how habitable Mars underground might be. Tarnas and his colleagues also evaluated the potential richness of life in Martian underground.They found that up to a million bacteria could exist.in just one kilogram of rock, The most habitable seemed to be the southern highlands of Mars, which is the most ancient area on Mars, according to Tarnas.

"Underground life would require water and it remains unknown if groundwater exists on the planet," says Lujendra Ojha, a planetary scientist at Rutgers University. Determining whether the Martian, subsurface contains water. will be an important next step, but this investigation helps to motivate that search, Ojha says, "Where there is groundwater, there could be life."

(1) What does radiolysis refer to according to the passage?! A. The formation of water deep underground. B. The breakdown of rocks in the Earth's core. C. The production of energy from radioactive elements. D. The process of radioactive elements splitting water molecule
(2)  How did Tarnas and his colleague carry out their research?  A. By simulating with collected data. B. By comparing original data. C. By engaging in a Martian field research. D. By conducting a survey.
(3) Which can be inferred from the last 2 paragraphs? A. Tarnas is the first to study Mars radiolysis B. The presence of groundwater is key to the findings. C. Ojha questions that underground life exists on Mars. D. The southern highlands of Mars was home to millions of bacteria.
(4) What is the research mainly about? A. The reason for no life on the Martian surface. B. The data source for the study of Martian habitability. C. The possibility of Mars sustaining life through radiolysis. D. The richness of radioactive elements below the Martian surface.
阅读理解 未知 困难
3. 阅读理解

Based on 2023's new book releases, we have a feeling that we'll be reading all year long. Below, we re highlighting just a few of the new books coming out in 2023 that you may want to check out.

The People Who Report More Stress

By Alejandro Valero$24.18

Alejandro's first novel The Town of Babylon came out in 2022, and this forthcoming short story collection, full of memorable personalities, explores similar themes: community, relationships, modern incredible life, racism and parenthood.

When Trying to Return Home

By Jennifer Maritza McCauley$25.11

Spanning (跨越) between Puerto Rico, Pittsburgh, Louisiana and Miami, this short story collection explores the complexities of belonging and the true meaning of home. Each individual story and the themes mentioned are written through the Black American and Afro-Latino experiences.

The Last Tale of the Flower Bride

By Roshani Chokshi$43.70

Roshani Chokshi's first surprising novel for adults is a fairy tale-filled story about marriage and the secrets couples keep from each other. That, and an enchanted (施过魔法的) house off the coast of Washington and hotel fortune.

I Have Some Questions for You

By Rebecca Makkai$27.90

Imagine if your life was the stuff of a true crime documentary. Bodie Kane has tried to move on past the 1995 murder of her boarding school roommate. When she returns to the boarding school as an adult, Bodie realizes there are still mysteries about how the case was wrapped up and justice was served.

(1) What do we know about The People Who Report More Stress? A. It's the second expensive of the four. B. It's Alejandro Valero's first novel. C. It consists of some short stories. D. It deals with several different themes.
(2) What is special about When Trying to Return Home? A. It explores community, relationships and so on. B. It tells the true meaning of home by experiences. C. It tells an enchanted house off the coast of Washington. D. It describes how a Black American returns to his home.
(3) Which of the following books best suits a detective story lover? A. The People Who Report More Stress B. When Trying to Return Home C. The Last Tale of the Flower Bride D. I Have Some Questions for You
阅读理解 未知 普通