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题型:阅读理解-阅读单选 难度:0.65 引用次数:528 题号:10496910

The cancer death rate in the U.S. fell by the most on record as advances in treatments for lung tumors (肿瘤) like video-assisted surgery helped prolong the lives of patients.

The death rate from cancer has been gradually declining for 26 years, thanks in large part to fewer people smoking cigarettes. But from 2016 to 2017, the most recent period available, it dropped by 2.2%, the most ever in a single year, according to a report released Wednesday by the American Cancer Society. That compares with an average 1.5% yearly decline over the decade. The drop translates to roughly 2.9 million fewer cancer deaths than would have occurred had death rates remained at their peak. For lung cancer specifically, the death rate declined 4.3% annually from 2013 to 2017.

"It is really lung cancer that is driving this," said Rebecca Siegel, scientific director of surveillance research at the American Cancer Society, and lead author on the new study. "We found increases in survival for lung cancer at every stage in diagnosis.”, She attributed the lower deaths to improvements in treatments, including video-assisted surgery that enables more patients with early lung tumors to become eligible for operations; more precise radiation treatment; and better scanning technology that allows doctors to better assess the stage of tumor, so the patient gets the best treatment right away. At later stages of illness, new, targeted drugs that aim at specific disease-causing genes are helping patients whose tumors have those genetic flaws (缺陷).Overall, lung cancer death rates have dropped by 51% for men since their peak in 1990, and by 26% for women since their peak in 2002.

There's the potential for more progress in future reports. That's because the latest death-rate statistics go only through 2017, and likely don't include the potential impact in lung cancer death from immune-therapy drugs. They became widely used in lung cancer only in the past few years.

The report, based on U.S. government data, isn't all good news. Prostate (前列腺)cancer death rates have leveled off recently after a period of decline. That may be because many doctors pulled back on using the controversial prostate-specific antigen test, or PSA, which can spot the disease but can lead to over-treatment of men who may never have                                        died from their tumors.

"Though it was definitely causing harm, it was also contributing to declines in death," Siegel said. What's needed now is better screening tests to detect only the prostate cancers that will go on to cause harm.

Population death rates are considered one of the most reliable ways of measuring progress in cancer treatment and prevention. By contrast, cancer survival rates can sometimes be influenced by improvements in diagnosing tiny, early stage tumors that wouldn't necessarily be deadly.

1. According to paragraph 2, ______.
A.cancer death rate reached its peak in 2017
B.death rate decreases over the past 2 decades
C.2.9 million people die of cancer in America every year
D.most of the cancer patients in America suffer from lung cancer
2. We can learn from the passage that ______.
A.female death rate of lung cancer drops more than that of male
B.targeted drugs have led to rapid increase in cancer death rates
C.better scanning technology will lead to improvement in treating genetic flaws
D.improper use of prostate-specific antigen test can lead to over-treatment of men
3. The underlined expression "level off” in paragraph 5 means ______.
A.remain unchangedB.show up
C.take offD.become sharp
4. What might be the best title of the passage?
A.Medical Progress Prolonging Patients’ Lives
B.Cancer Death Rates Dropping at the Fastest Pace
C.Significant Improvement in Treating Lung Cancer
D.Advanced Technologies Applied in Cancer Treatment

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【推荐1】We’ve all checked on the bathroom for our scheduled cleaning only to find some mold(霉菌). Sometimes it can also be found in basements since mold loves dark and damp areas.    1    However, the fact is that it can also be quite dangerous.

A 2022 case explained why a British kid Awaab Ishak died when he was just two years old.    2    This tragedy raised many red flags when it comes to how dangerous mold exposure can actually be. Due to climate change, it could become even more dangerous in the future.

    3     It has a hairy appearance, as well as an unpleasant smell. It thrives (茁壮成长) in damp areas like leaky roofs, water pipes, and damp rooms. The main issue comes from the spores (孢子) emitted by it. To reproduce and spread, mold discharges microscopic airborne spores into the surrounding area.

For most people, mold might cause coughs and stuffy noses, but nothing worse than that. However, for those with weak immune systems and certain allergies (过敏症), things could be much worse.    4     The most common types of harmful indoor mold include Cladosporium, Aspergillus, and Penicillium, and there is usually much concern around black mold since it can produce poison.

These specific types of mold can be found in 47% of homes, and there are some concerns that climate change will further increase it. Weather changes have made floods, damp weather, and warm temperatures much more common.    5           

To get rid of mold, it’s important to find the root cause of the issue and fix that promptly. Next, it’s vital to thoroughly clean anything impacted by the mold.

A.It’s highly likely that it is mold.
B.Most people regard it as simply an annoyance.
C.It can be very difficult to prevent mold from growing.
D.It pointed to exposure to mold in his family’s apartment.
E.And such environments are ideal for mold to grow rapidly.
F.Mold has a structure that allows some bacteria to grow on it.
G.Some types of mold can produce something even deadly to humans.
2023-10-26更新 | 57次组卷
阅读理解-阅读单选(约320词) | 适中 (0.65)
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【推荐2】Scientists have developed a blood test to diagnose (诊断) Alzheimer’s disease without the need for expensive brain imaging or a painful lumbar puncture (腰椎穿刺), where a sample of CSF (脑脊椎液) is drawn from the lower back. If effective, the test could enable faster diagnosis of the disease, meaning treatments could be done earlier.

Alzheimer’s is the most common form of dementia (痴呆), but diagnosis remains challenging — particularly during the earlier stages of the disease.

Current guidelines recommend detection of three distinct symptoms: abnormal accumulations of amyloid and tau proteins proteins, as well as neurodegeneration — the slow and progressive loss of neuronal cells in specified regions of the brain. This can be done through a combination of brain imaging and CSF analysis. However, a lumbar puncture can be painful and people may experience headaches or back pain after the procedure, while brain imaging is expensive and takes a long time to schedule.

Prof. Thomas Karikari at the University of Pittsburgh, in Pennsylvania, US, who was involved in the study, said: “A lot of patients, even in the US, don’t have access to MRI and PET scanners. Accessibility is a major issue.”

The development of a reliable blood test would be an important step forwards. “A blood test is cheaper, safer and easier to administer, and it can improve clinical confidence in diagnosing Alzheimer’s and selecting participants for clinical trial and disease monitoring,” Karikari said.

The next step will be to confirm the test in a broader range of patients, including those from varied racial and ethnic backgrounds, and those suffering from different stages of memory loss or other potential dementia symptoms.

Karikari also hopes that monitoring levels of brain-derived tau in the blood could improve the design of clinical trials for Alzheimer’s treatments.

1. What can we learn about blood test from Paragraph 1?
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C.It is helpful to control the medicine.D.It can increase lower back’s pain.
2. What is the priciest way of detecting the symptoms?
A.CSF analysis.B.A lumbar puncture.C.Blood test.D.Brain imaging.
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A.By expanding more clinics.B.By raising patients’ confidence.
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4. What is the best title for the text?
A.An Approach to Diagnose Alzheimer’s Disease
B.Some Different Symptoms of Detecting the Disease
C.The Potential Problems of Alzheimer’s Disease
D.A Few Guidelines to Use the Medical Devices
2023-05-22更新 | 60次组卷
阅读理解-阅读单选(约380词) | 适中 (0.65)

【推荐3】UK physicist Isaac Newton once said, “ Nature is pleased with simplicity and nature is no dummy (傻子).” Indeed, Mother Nature can provide almost everything human beings need if we follow her rules. But if we break the rules, she is likely to be cruel.

The outbreak of the novel coronavirus pneumonia (新型冠状病毒肺炎,NCP) in China and some other countries at the beginning of this year is an example. According to Xinhua News Agency ,the new coronavirus is similar to a virus found in a bat in 2017 and probably has an intermediate host (中间宿主).If it is believed that the virus originated from the Huanan Seafood Market in Wuhan, Hubei province, where live wild animals were sold.

The Wall Street Journal reported that Dr Peter Daszak, president of the US-based health organization EcoHealth Alliance, said, “This outbreak is a lesson for us. On a global scale, human population density (密度),wildlife diversity, and land use change are what drive new pandemics (流 行病).”

In ancient times, people needed to rely on nature to survive so they held it in awe (敬畏). For example, the American Indians believed that humans are a part of nature and nature is a pail of humans. Chinese ancients always pursued the harmony between nature and human beings.

However, as human beings master more knowledge and make more advanced tools, people try to change and even conquer nature. They use more land to make buildings, genetically modify plants, capture some wild and rare animals to suit their own needs. In this process, humans gradually lose contact with nature and even throw it out of balance. For example, cutting a large number of forests means carbon dioxide must build up in the atmosphere and it contributes to global warming.

Although we don't know for sure what first caused the NCP outbreak, Brian Lamacraft at Medium said it's time for people to'' reflect on our relationship with our plant" reconnect with this world and everything that we've been given". After all, according to US poet Gary Snyder, " Nature is not the place to visit. It's our home."

1. Why does the author give the example of the NCP in Paragraph 2?
A.Because it results from humans going against nature.
B.Because it has caused widespread suffering.
C.Because it broke out at the beginning of this year.
D.Because it is similar to another pandemic.
2. What lesson did Daszak think human beings should learn from the NCP outbreak?
A.Bats are one of the most dangerous wild animals.
B.It's impossible to prevent new pandemics globally.
C.We should stop the wildlife trade around the world.
D.Humans should live peacefully with nature.
3. What is the main idea of Paragraph 5?
A.How human beings become their own masters.
B.How human activities cause global warming.
C.How human beings break the balance of nature.
D.How humans use technology to improve their lives.
4. What is the author's purpose in writing this article?
A.To reflect on the NCP outbreak.
B.To explain what led to the NCP outbreak.
C.To describe experts, predictions on new pandemics.
D.To compare ancient and modern attitudes toward nature.
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