3 . Lena Mars and her parents had taken a trip to Costa Rica. While enjoying one of the country’s many beautiful beaches, the girl’s parents gave her a snack. But it turned out that she wasn’t the only one who was hungry: A wild iguana (鬣蜥) appeared unexpectedly as the girl at e her cake by the water. The iguana ran up to the girl and bit her on the back of her left middle finger, causing her to drop the cake. The animal then ran off with the snack, but it did leave something else behind.

The Mars immediately took the girl to a local clinic, where a doctor disinfected the wound with alcohol and gave her some antibiotics (抗生素). The wound appeared to have cleared up in about two weeks. It was five months later, when Lena’s parents noticed a coin-sized bump (肿块) on her hand in the same spot causing mild pain, that they thought they should take her to another doctor.

The doctor removed the 2-centimeter mass and took a closer look at the growth in the lab and discovered that the child had a rare infection that more commonly causes a tuberculosis-like illness in fish. It’s ubiquitous in fresh and salt water but rarely infects humans. Typically, when humans are infected, it’s after a wound has been exposed to the bacteria in water.

Most antibiotics alone don’t work on these kinds of infections, so the doctor gave the girl a different medical treatment often used for skin infections. She responded well to the treatment.

“Generally, iguanas will go about their day. But like any wildlife, if they start associating people with food, they’re going to risk coming closer.” said Anna Meyer, operations manager at a zoo in Florida. “The lesson here is that no one should feed wildlife, because they will most likely give you a bite.”

1. What can we learn about Lena Mars?

A．She tried to feed an animal.	B．She was bitten by an iguana.
C．She left the cake on the beach.	D．She found a rare wild animal.

2. Why did Lena’s parents take her to another doctor?

A．The antibiotics were harmful.	B．They distrusted the first doctor.
C．Her wound became infected.	D．She took the medicine wrongly.

3. What does the underlined word “ubiquitous” in paragraph 3 probably mean?

A．Common.

B．Dangerous.

C．Lively.

D．Useful.

4. What did Anna Meyer want to say about feeding wildlife?

A．It is good for wildlife.	B．It puts animals in danger.
C．It is a risky behavior.	D．It gets us close to nature.

4 . Researchers at the University of Arizona have been studying the effects of green light therapy on those suffering from migraine (偏头痛). In September, they completed their first clinical study and the results are very encouraging. They found that green light therapy is extremely beneficial to those who suffer from headaches. It not only reduces the intensity of the pain, but it also decreases its frequency by 60 percent, significantly improving patients’ quality of life.

According to the Migraine Research Foundation, migraine is the third most common illness in the world, affecting one billion worldwide, including men, women, and children. Additionally, it is the sixth most disabling illness in the world and more than 90 percent of the sufferers are unable to carry on with their normal activities during their sufferings. And when it is actually treated, medication overuse can lead to episodic (偶尔发生的) migraine turning chronic (慢性的).

According to Science Daily, the recent clinical study included 29 patients who suffer from episodic or chronic migraine. They have tried but failed in several traditional therapies including Botox injections and oral medications. In the study, participants spent two hours at home each day staring at a green-light LED. They did this for ten weeks, reporting the number and intensity of headaches they had.

Dr. Patwardhan, co-author of the study, said that the green light discharged by the LED greatly helps those who do not want to take medicine as well as those who do not respond to medications. “The beauty of this approach is the lack of associated side effects,” Patwardhan explained. But that’s not all. The participants also reported significant improvements in sleep quality and in the ability to perform everyday normal activities such as exercise and work. And none of them reported any side effects.

As the study reveals, green light treatment might be an unprecedented (前所未有的) alternative for migraine sufferers.

1. What can we learn from the research?

A．Migraine sufferers unable to live a normal life makes up about 60%.

B．Episodic migraine can be treated more easily than chronic migraine.

C．Headaches can be relieved by green light.

D．Migraine most frequently happens to adults.

2. What were the 29 participants asked to do in the study?

A．Take some traditional medicine daily for ten weeks.

B．Use a green-light LED the whole night at home for ten days.

C．Receive an injection each day for two months.

D．Look at the green light for two hours per day for 70 days.

3. Which of the following can replace the underlined word “discharged” in Paragraph 4 ?

A．lit up

B．put out

C．taken in

D．sent out

4. What was Patwardhan’s attitude to the new treatment?

A．He thought it had side effects.

B．He agreed it was of great benefit.

C．He worried it might affect sleep.

D．He wondered if it hurt eyes.

6 . There is some truth to the old belief that achy joints are a sign that bad weather is on the way. Research shows a relationship between pain levels and changes in weather, particularly for people who suffer from chronic conditions such as arthritis (关节炎).

A2019 UK study analyzed the daily pain logs of 13,000 residents with arthritis. Using GPS data from participants’ smartphones, the researchers found connections between pain and humidity (湿度), air pressure and wind speed. Participants were more likely to experience pains on stormy, windy days and least likely to do so when conditions were dry and calm.

It’s unclear why changes in weather may influence pain severity for some people and not for others. “Everyone experiences pain differently,” says Sin Bevan, chief science officer at Arthritis Society Canada. “There are a lot of factors that could impact pain tolerance, including sleep, stress and depression.”

“It’s a good idea to track your symptoms and how certain weather conditions may affect your pain levels,” says Bevan. “From there you can manage expectations for what can be done on days when symptoms are worse.”

Not surprisingly, there’s evidence that the weather may also impact your mood. There are multiple reasons for this connection, according to Dr Max Pemberton, a UK-based psychiatrist.   “Less sunlight affects your levels of melatonin, a hormone (激素) directly involved in mood regulation.”

Besides, bad weather may contribute to social isolation and loneliness because we can’t go outside and do things we enjoy with friends and family, explains Pemberton.

Once you understand how the weather impacts you physically or mentally, there are strategies you can try. For example, if you’re sensitive to cold and damp weather, a hot bath could provide relief for achy joints. Regular exercise — even if it has to be indoors — is also known to improve mood and is an important part of pain control.

1. What kind of weather is more likely to cause pain?

A．Windy and cloudy weather.

B．Rainy and windy weather.

C．Rainy and calm weather.

D．Calm and dry weather.

2. What can we learn from Sian Bevan’s words?

A．There is little to do when pain is severe.

B．Everyone is affected by weather changes.

C．A lack of sleep may affect people ‘s mood.

D．People differ in their ability to suffer pain.

3. What can people do to relieve pain in bad weather according to the text?

A．Have a hot bath.	B．Stay in bed.
C．Hang out with friends.	D．Take some pills.

4. Where is the text probably taken from?

A．A biology textbook.	B．A news report
C．A health magazine.	D．A weather report.

9 . Regular physical activity had nearly doubled cardiovascular (心血管的) benefits in individuals with depression or anxiety, compared with individuals without these diagnoses, according to a study presented at the American College of Cardiology’s 71st Annual Scientific Session.

The research findings add to mounting evidence that exercise improves cardiovascular health by helping to activate parts of the brain that counteract stress. Overall, the study found that people who achieved the recommended amount of physical activity per week were 17% less likely to suffer a major harmful cardiovascular event than those who exercised less. These benefits were significantly greater in those with anxiety or depression, who had a 22% risk reduction vs. a 10% risk reduction in those without either condition.

“The effect of physical activity on the brain’s stress response may be particularly relevant to those with stress-related mental conditions,” said Hadil Zureigat, MD, postdoctoral clinical research fellow at Massachusetts General Hospital and the study’s lead author. “This is not to suggest that exercise is only effective in those with depression or anxiety, but we found that these patients seem to get a greater cardiovascular benefit from physical activity.”

Rates of both depression and anxiety have risen during the outbreak of flu, and heart disease remains the leading cause of death in the US. The study findings underline the important role of exercise in maintaining heart health and reducing stress, according to the researchers.

“Any amount of exercise is helpful, particularly for those with depression or anxiety,” Zureigat said. “Not only will physical activity help them feel better, but they will also significantly reduce their risk of cardiovascular disease. It can be hard to make the transition, but once achieved, physical activity allows those with these common chronic (慢性的) stress-related mental conditions to hit two birds with one stone.”

1. Who can get the most cardiovascular benefit from regular exercise?

A．Someone with little brain capacity.	B．Someone with abnormal heart rates.
C．Someone diagnosed with depression.	D．Someone with fear-related mental conditions.

2. What does the underlined word “counteract” in paragraph 2 probably mean?

A．Double.

B．Resist.

C．Awaken.

D．Transport.

3. Which of the following may the findings support?

A．Physical exercise is vital to mental health.

B．Physical exercise can cure those people of flu.

C．Exercise merely works for those with depression.

D．Exercise accelerates the recovery of all mental patients.

4. What is the best title for the text?

A．Physical Activity Can Prevent Chronic Disease

B．Heart Disease Remains the Leading Cause of Death

C．Rates of Depression Have Risen During the Outbreak of Flu

D．Workout Is Very Good for Stress-related Patients’ Cardiovascular Health