If Mars were the popular kid in school, Venus (金星) would be the unwelcome one sitting in the corner, largely ignored. Venus has nearly the same mass and size as Earth, but being closer to the sun, it gets nearly twice as much heat from the sun.
However, instead of having a climate that is just a warmer version of Earth’s, Venus’s surface and atmosphere are unbearable: clouds of sulphuric acid (硫酸) blanket the planet, while at ground level, it is hot enough to melt lead. Despite this, there is now a sign that Venus may harbour life. Jane Greaves at Cardiff University, UK, and her colleagues recently detected (发现) phosphine (磷化氢) in Venus’s atmosphere, with one potential explanation that it is the by-product of biology. That is because the only way this gas is made on Earth is in laboratories or by microbes (微生物). Though this doesn’t mean it was produced by life on Venus, attempts to find non-biological explanations for its presence have so far failed. Our best way of confirming or rejecting the possibility of life on Venus is to go and have a proper look. While Mars has been the focus of interplanetary (行星间的) exploration efforts lately, the phosphine discovery lets people look at Venus in a new light. As NASA administrator Jim Bridenstine tweeted: “It’s time to prioritize Venus.”
In the months and years to come, computer simulations(模拟) will be used to further study the possible chemistries of the atmosphere on Venus. More laboratory experiments will be conducted to try to identify other ways the phosphine there could be produced. However, there is no guarantee that these efforts will reveal the true nature of this substance on Venus. A newly-proposed strategy is to directly sample the atmosphere and surface of Venus. By doing so, we would be able to take direct measurements of phosphine.
The discovery of phosphine in Venus’s atmosphere is a great accomplishment. The scientific efforts may be just what we need to finally refocus on this neglected world. Possibly, the quiet kid in the corner may get the last laugh
1. Which description about Venus is NOT true?A.It has the unbearable surface and atmosphere. |
B.It has nearly the same mass as Earth. |
C.It is almost as large as Earth. |
D.It has a warmer Earth-like climate. |
A.This kind of gas is very common. | B.There might exist signs of life. |
C.Many products can be made with it. | D.Experiments were once conducted there. |
A.The necessity to analyse phosphine. |
B.The power of computer simulations |
C.The importance of observations. |
D.The approaches to exploring phosphine |
A.Casual | B.Doubtful. | C.Supportive. | D.Unclear. |
相似题推荐
【推荐1】Despite what so many people would love to believe, NASA hasn’t discovered any evidence of past or present intelligent life on Mars. So, when the Curiosity rover (好奇号探测器) found something suspicious on the Red Planet’s surface, they were not only surprised but also a little bit worried.
The thin fragment was suspicious enough to guarantee its own name, with NASA’s Curiosity rover team calling it the “Pettegrove Point Foreign Object Debris,” named for the location where it was discovered. With no idea what it was or where it came from, the rover’s handlers began to worry that it might actually be a piece of the rover itself, suggesting some unseen damage or other issue with the robot. Thankfully, those concerns seem to have been unfounded.
In a new update from NASA the object has now been identified as a natural piece of rock rather than a piece of any man-made craft or vehicle. The team analyzed the bizarre object with a tool called the ChemCam RMI. The instrument uses a laser (激光器) to sniff out the makeup of anything it’s pointed at, and the results for this particular piece of debris revealed that it’s actually just a very thin piece of rock.
NASA describes the inspection: The planning day began with an interesting result from the previous plan’s ChemCam RMI analysis of a target that was referred to as “Pettegrove Point Foreign Object Debris” (PPFOD), and speculated to be a piece of spacecraft debris. In fact it was found to be a very thin flake of rock, so we can all rest easy tonight—Curiosity has not begun to shed its skin!
How this particularly thin sliver of rock got to where it is—and why it seems to be a different colour than the surrounding sand and debris —remains unexplained, but at least the rover isn’t falling apart.
1. What attitude does NASA hold towards the newly found thin fragment?A.Positive. | B.Surprised. | C.Interested. | D.Amazed but worried. |
A.Its finder. | B.Its location. | C.Its researcher. | D.Its shape. |
A.Strange. | B.Changeable. | C.Normal. | D.Common. |
A.How this particularly thin sliver of rock got to where it is. |
B.Why it seems to be a different colour than the surrounding sand and debris. |
C.Whether the rover is falling apart. |
D.None of them. |
【推荐2】Why should mankind explore space? Perhaps the best answer lies in our genetic makeup as human beings. What prompted our distant ancestors to move from the trees into the plains, and on into all possible areas and environments?
Exploration also allows minerals and other potential resources to be located. Additional resources are always beneficial when used wisely, and can increase our chances of survival. Knowledge or techniques acquired through exploration, or preparing to explore, filter from the developers into society at large.
In certain circumstances, life on Earth may become impossible: over-population or wide spread diseases, for instance, might eventually force us to find other places to live. While the earth is the only planet known to sustain life, surely the adaptive ability of humans would allow us to inhabit other planets and moons. It is true that the lifestyle would be different, but human life and cultures have adapted in the past and surely could in the future.
A.The techniques may have medical applications which can improve the length or quality of our lives. |
B.Space allows us to expand and succeed: for the sake of everyone on the earth, now and in the future, space exploration is essential. |
C.The mysterious space objects varying in size have been fascinated scientists and scholars for years. |
D.It appears that we are driven to ensure the success and continuation of not just our own genes, but of the species as a whole. |
E.Therefore it still poses a problem for us human beings whether to explore the space at the cost of our own homelands. |
F.While space may hold many wonders and explanations of how the universe was formed or how it works, it also holds dangers. |
【推荐3】It sounds like something from the field of science fiction — a space exploration into vast outer space, heading towards the Red Planet While we’re not quite ready to put a person on it, the question we ask today is:
The space race saw the USSR (the Union of Soviet Socialist Republics) and USA compete to achieve firsts in spaceflight. The USSR released Sputnik 1, an artificial satellite, before anyone else,
However, not everyone agrees. Leading astrophysicist Neil deGrasse Tyson has said the concept of changing habitability of a planet is not always practical.
It seems that the main reason at the moment is the search for alien (外星的) life.
A.and the US landed on the moon first. |
B.Instead, it makes no sense when we can simply terraform Earth because of the damage we have done to it. |
C.One of these could be the survival of our species. |
D.Why are so many countries interested in going to Mars? |
E.It has been believed that, at one time, a certain form of life did exist in this red planet. |
F.Surely inspiring a new generation to visit the stars is reasonable enough. |
G.May landing on Mars inspire more people to become interested in exploring space? |
【推荐1】Some of the greatest moments in human history were fueled by emotional intelligence. When Martin Luther King Jr. presented his dream, he chose language that would stir the hearts of his audience. Delivering this electrifying (展性的) message required emotional intelligence — the ability to recognize, understand, and manage emotions.
Emotional intelligence has been highly recommended by leaders, policymakers, and educators as the solution to a wide range of social problems. If we can teach our children to manage emotions, the argument goes, we’ll have less bullying and more cooperation. If we can cultivate emotional intelligence among leaders and doctors, we’ll have more caring workplaces and more compassionate healthcare.
Emotional intelligence is important, but the uncontrolled enthusiasm has obscured (掩盖) a dark side. New evidence shows that when people sharpen their emotional skills, they become better at manipulating (把持) others. When you`re good at controlling your own emotions, you can hide your true feelings. When you know what others are feeling, you can motivate them to act against their own best interests.
Social scientists have begun to document this dark side of emotional intelligence. In a research led by University of professor Jochen Menges, when a leader gave an inspiring speech filled with emotion, the audience was Jess likely to scrutinize (细察) the message and remembered of the content. Ironically (讽刺的是) audience members were so moved by the speech that they claimed to recall more of it.
The authors call this the awestruck effect, but it might just as easily be described as the dumbstruck effect. One observer reflected that Hitler’s persuasive impact came from his ability to strategically express emotions — he would “ear open his heart — and these emotions affected his followers to the point that they would stop thinking critically and just emote.”
Leaders who master emotions can rob us of our capacities to reason. If their values are out of step with our own, the results can be destructive. New evidence suggests that when people have self-serving motives (动机), emotional intelligence becomes a weapon for manipulating others. In a study led by the University of Toronto psychologist Stephane Cote, university employees filled out a survey about their Machiavellian (不择手段的) tendencies, and took a test measuring their knowledge about effective strategies for managing emotions. Then, Cote’s team assessed how often the employees deliberately undermined (逐渐削弱) their colleagues. The employees involved in the most harmful behaviors were Machiavellians with high emotional intelligence. They used their emotional skills to lower the dignity of their peers for personal gain.
Shining a light on this dark side of emotional intelligence is one mission of a research team led by University College London professor Martin Kilduff. According to these experts, emotional intelligence helps people disguise (伪装) one set of emotions while expressing another for personal Professor Kiiduit’s team writes, “The strategic disguise of one’s own emotions and the manipulation of others’ emotions for strategic ends are behaviors evident not only on Shakespeare’s stage but also in the offices and corridors where power and influence are traded.”
Of course, people aren’t always using emotional intelligence for nefarious ends. More often than not, emotional skills are simply instrumental tools for goal accomplishment. A research team discovered that founder Anita Roddick used emotional intelligence to inspire her employees fundraise for charity. As Roddick explained, “Whenever we wanted to persuade our staff to support a particular project, we always tried to break their hearts.”
There is growing recognition that emotional intelligence-like any skill-can be used for good or evil. So if we’re going to teach emotional intelligence in schools and develop it at work, we need to consider the values that go along with it and here it’s actually useful.
1. Why does the author mention Martin Luther King, Jr?A.To honor the great leader for his courage. |
B.To recommend his speech to other leaders. |
C.To impress the readers with a major topic. |
D.To advocate a society with fewer problems. |
A.Developing the capability to control one’s own emotion. |
B.Inducing people to do what brings disadvantages to them. |
C.Appealing to the audience to concentrate and remember more. |
D.Encouraging the moved audience to a more of the speech. |
A.His followers would tear open their hearts to him. |
B.His followers would express emotions strategically. |
C.His followers would lose the ability to reason properly. |
D.His followers would develop the self-serving motives. |
A.They disguise their emotions to earn others’ trust. |
B.They help their colleagues to build up confidence. |
C.They present their strategic behaviors on the stage. |
D.They lower their own dignity to gain popularity. |
【推荐2】News From The
World of Medicine
The balance challenge
Can you stand on one leg for ten seconds? This question could help doctors assess the overall health of their middle-aged and older patients, argues a Brazilian-led study published in the British Journal of Sports Medicine.
Besides causing falls, poor balance can also signal underlying medical issues, such as declining eyesight or nerve damage caused by diabetes (糖尿病). Much like grasp strength and walking speed, balancing ability doesn’t tell the whole story of your health, but it’s a useful clue.
Don’t remove skin tags and moles yourself.
Two of the most common types of skin spots among adults are dark spots known as moles and the growths known as skin tags.
In some places, mole- and skin-tag removal kits are sold for home use.
Researchers from New Zealand recommend a 60-kilogram person consume 110 milligrams of vitamin C per day through a balanced diet, while someone weighing 90 kilograms needs 140 milligrams. That is to say, when taking vitamin C, it’s best to take your weight into account. Eating foods like oranges—which contain on average 70 milligrams of vitamin C each—can really help.
A.Tailor Vitamin C intake to your weight. |
B.The subjects who couldn’t perform this had a higher risk of death. |
C.Vitamin C supplements are always safe and effective for everyone. |
D.Regular exercise can improve your balance and reduce the risk of falls. |
E.Both are harmless and don’t require treatment unless their appearance is an issue. |
F.But these products can contain a large amount of salicylic acid (水杨酸) and could leave you with permanent scars. |
【推荐3】Because of the pandemic, our lives have been full of uncertainty—about safe behaviors, school openings, the job market and more. Uncertainty is stressful, of course, and research suggests it may harm our health. But a study published this year in Emotion has uncovered a surprising upside to feeling uncertain:
In one experiment, researchers handed out flyers to pedestrians that said “Life is unpredictable: Stop and smell the roses” or “Life is constant: Stop and smell the roses”.
Why? Savoring and appreciating the small things in life may be a protective response that our minds activate when we feel upset by the ambiguity of life.
“If the world is uncertain, it makes sense to take advantage of what you have now because it may not exist shortly,” explains lead author Andrew L. Gregory.
A.It might drive us to appreciate the little things in life. |
B.It even causes people to ignore the beauty surrounding them. |
C.A short distance away was a table with a dozen red roses on it. |
D.The researchers found that this effect translated to everyday life. |
E.It is not easy to appreciate the insignificant things in our daily life. |
F.We can even deliberately practise savoring life when it seems unsettling. |
G.This response pulls us out of fears and worries about an uncertain future. |
【推荐1】Getting paid to stay in bed all day sounds pretty good.Bui what if someone offered you$23,000 to stay in bed for two months?That’s the deal that a research team is offering to 24 volunteers.
Researchers are looking for volunteers to help them study the influences of weightlessness on the human body by spending 60 days lying down.Lying in bed isn’t exactly the same as being weightless,but the influences on the human body are similar.
When astronauts spend a long time in an environment with no gravity,like the International Space Station(ISS),their bodies are affected in many ways.After a couple of months on the ISS,astronauts hearts don’t beat as hard.Their muscles(肌肉)become weaker because they no longer have to work against gravity.Their bones(骨头)may break more easily.There may also be changes in the astronauts sleep habits.
Dr.Armaud Beck,the researcher in charge of the study,said his goal was to measure the influences of weightlessness,and also to find ways to prevent problems.The study will take 88 days altogether.During the first two weeks the volunteers will be tested to establish(建立)their levels of fitness.Then they will spend 60 days lying in bed with their heads a little lower than their bodies.They will have to do everything while lying down,including brushing their teeth and going to the bathroom.Dr.Beck said the rule is that they must have at least one shoulder touching the bed at all times.Half of the volunteers in the study will be taking capsules(胶囊)containing special food supplements(增补物)several times a day to see if they help reduce the health problems caused by weightlessness.
The last two weeks of the study will be spent trying to let the volunteers recover.Volunteers must be men between the ages of 20 and 45 who are in perfect health.They must be non-smokers.
The study will take place from September 1 st to November.The first two days are the time for volunteers to sign in.
1. Why are the volunteers asked to lie in bed in the study?A.It is the same as being weightless. |
B.It can make astronauts sleep well. |
C.It has the similar influences as being weightless. |
D.It can help volunteers feel the gravity better. |
A.His heart beats faster. |
B.His bones may become weak. |
C.His weight may rise slowly. |
D.His eating habits may be affected. |
A.Lying down for 60 days in zero gravity. |
B.Finishing most daily tasks when lying in bed. |
C.Helping test some food supplements’effect. |
D.Sleeping on their back most of the time. |
A.Volunteers need to lie in bed all the time. |
B.The study will last for more than three months. |
C.Volunteers’fitness tests will last till the end of September. |
D.They’ll lie on the bed all the time for the whole October. |
【推荐2】Tech giants Apple and Google are teaming up to create a system that would let smart phone users know when they've come into contact with someone who has COVID-19.
The technology would rely on the Bluetooth signals that smart phones can both send out and receive 1aperscn tests positive(阳性) for COVID-19, they could inform public health authorities through an app. Those public health apps would then warn anyone whose smart phones bad come tear the infected person's phone in the previous 14 days. The technology could be used on both Google Android phones and Apple iPhones.
The companies insist that they will preserve smart phone users' privacy and their technology will be used only by public health authorities to trace the spread of COVID-19. Smart phone users can choose to use it. The software will not collect data on users' physical locations or their personally identifiable information. People who test positive would remain unknown to the public, both to the people who came in contact with them and to Apple and Google. “Privacy is of greatest importance in this effort,” the companies said in a joint statement.
The American Civil Liberties Union has warmed that using cellphone data to handle the pandemic carries risks of “destruction of privacy”. In a statement on Friday, ACLU cyber security counsel Jennifer Granick said, The system also can't work well if people don’t trust it”. She said that the joint Apple and Google project “appears to reduce the worst privacy risks, but there is still room for improvement.” She added that the contact tracing app should be used only for public health purposes and only for the duration of this pandemic.
Public health officials say the contact tracing -finding people who have been in contact with an infected person will be a key step in lifting shelter in-place restrictions.
It would allow people who are known to have been exposed to the virus to isolate themselves, while letting others recover normal activities.
1. What is the main purpose of the passage?A.To advertise for public health. | B.To introduce a contact tracing system. |
C.To warn the public of risks of COVID-19. | D.To raise people's awareness of privacy protection. |
A.Warn people who test positive. | B.Protect infected people's privacy. |
C.Work with public health authorities. | D.Collect data on users physical locations. |
A.Public health issues are traced accurately. | B.Only people's trust influences the system. |
C.The system is at the risk of being destroyed. | D.Jennifer thinks the system should be better. |
A.ensure infected people's recovery | B.guarantee people's normal activities |
C.help prevent the spread of COVID-19 | D.encourage all the people to isolate themselves |
【推荐3】You see your phone light up from the corner of your eye and quickly reach for it. What started as a simple notification (通知) check snowballs into an hour-long period as you look through rows of notifications and endless social media feeds.
This is by design. Tech companies such as Google and Facebook have spent years working to make consumer technology as addictive as possible. After all, time spent with their products could equal big profits for the company.
However, that’s starting to change. Apple takes action with the introduction of tools in its new operating system aimed at informing users to better manage their smartphone usage and parental controls that allow parents to better monitor and control their children’s phone time.
Google also offers a “Wind Down” feature to set at bedtime, which automatically puts the phone into “Do Not Disturb”. No notifications will show up on your phone, and losing all colour on-screen is certainly a cause to put your phone away.
There are still no clear guidelines on what causes tech addiction, but it’s a growing concern likely on the minds of parents everywhere as they see their kids’ faces constantly glued inches away from a screen. And everywhere you go, you’re all but guaranteed to see people buried in their phones.
Apart from Apple and Google, Facebook deserves a fair amount of blame, as an expert acknowledged in a blog post earlier this year. The social network announced plans to roll out changes aimed at making interactions more meaningful.
“By making these changes, I expect the time people spend on Facebook will go down,” the expert said. “But I also expect the time you do spend on Facebook will be more valuable. And is over the long term too.” If we do the right thing, I believe that will be good for our community and our business.
1. What has been done to change phone addiction?A.Making some colour disappear on the screen. |
B.Offering functions to reduce phone use. |
C.Improving consumer technology. |
D.Stopping sending messages. |
A.Google. | B.Apple. | C.A blog post. | D.Facebook. |
A.Facebook is expecting fewer people to use it. |
B.It’s valuable for people to do the right thing on Facebook. |
C.People should spend time on Facebook as little as possible. |
D.Facebook and its consumers will have a win-win relationship. |