Because of the contribution to the fight against malaria, one of the most serious
With the whole COVID-19 epidemic, there’s a very good combination of Chinese and Western medicines being used,
TCM is based
“
Lai also believes that with its uniqueness and advantages,
But Zhang Boli, an academician at the Chinese Academy of Engineering, was not that optimistic
3 . Getting paid to stay in bed all day sounds pretty good, but what if someone pays you $ 23, 000 to stay in bed for two months? That’s the deal that a medical research team in France is offering to 24 volunteers.
The researchers are looking for volunteers to help them study the effects of weightlessness (失重状态) on the human body and find ways to stop problems. Lying in bed isn’t exactly the same as being weightless, but the effects are alike.
When astronauts spend a long time in an environment with no gravity, their bodies change in many ways. After several months, their hearts don’t beat as hard. Their muscles become smaller and weaker. Their bones may be broken more easily. There may also be changes in the astronauts’ immune systems (免疫系统) and sleep habits.
The study will take 88 days. During the first two weeks, the volunteers will be tested to make sure of their levels of fitness. Then they will spend 60 days lying in bed with their heads lower than their bodies. They will have to do everything while lying down, including eating, brushing their teeth, and going to the bathroom. The rule is that they must have at least one shoulder touching the bed at all times. The last two weeks of the study will be spent trying to build up the volunteers’ fitness again.
Volunteers must be men between the ages of 20 and 45 who are in perfect health. The researchers completed one study in April. A second study will take place from September to December.
1. What’s the third paragraph mainly about?| A．How astronauts work in an environment without gravity. |
| B．Astronauts’ sleep habits in an environment without gravity. |
| C．Why astronauts’ bodies change in an environment without gravity. |
| D．The effects of an environment without gravity on astronauts’ bodies. |
| A．be women | B．come from France |
| C．be in excellent condition | D．be under twenty years old |
| A．How to build up astronauts’ fitness. |
| B．Researchers pay volunteers to stay in bed. |
| C．Effects of weightlessness on the human body. |
| D．Disadvantages of lying in bed for two months. |
| A．A medical magazine. | B．A short novel. |
| C．A grammar book. | D．A travel guidebook. |
4 . As they reach school age, about 90 percent of children will have experienced a condition in which fluid (液体) fills the middle ear, muffling (使模糊) sound and sometimes causing infection. The fluid usually clears on its own, but if not, it can lead to a painful ear infection called acute otitis (中耳炎) media. In some cases the fluid can persist for more than a year, causing hearing loss during this period, and slowing down their development of language and social skills.
Diagnosis usually requires a visit to a specialist—but researchers have now developed an app that detects this fluid just as accurately, with only a smartphone and a paper funnel (漏斗).
Doctors typically detect the problem by peering into the ear for a visual assessment. Yet, this method has only a 50 percent accuracy rate. “Right now, if you bring your child to a pediatrician, or to any urgent care family doctor, the way they look at whether or not there’s fluid in the middle ear is by looking at the eardrum,” says Sharat Raju, a surgeon in the department of head and neck surgery at the University of Washington.
For a cheaper and more accessible alternative, researchers at the University of Washington turned to smartphones. First the user follows a template to cut and tape a piece of paper into a funnel, which can be placed between a smartphone and the patient’s ear. Next the app plays a chirping sound through the phone’s speaker; the sound waves bounce off the eardrum and hit the phone’s microphone, where they register and are analyzed by the app. An eardrum with fluid behind it will vibrate (振动) differently than if the middle ear is full of air, as it normally is.
To develop the app, the researchers first played chirps for patients with and without fluid in their ears. They recorded the echoes (回音), which indicate the eardrum’s mobility. Then they used a machine learning model to classify the returning sound waves, determining which audio characteristics indicated a normal ear and which suggested the presence of fluid. Once they tested the app on 98 children, ranging from 18 months to 17 years old, at Seattle Children’s Hospital. It correctly detected fluid in 85 percent of cases, and correctly identified fluid-free ears in 82 percent.
The researchers are currently trying to get FDA approval for the app, and have founded a company to commercialize it. They hope to make it available by the end of the year, to help parents track children’s ear health at home.
1. What do we know about the fluid from the first paragraph?| A．It is mostly part of children’s growth. | B．It is unavoidable for any child. |
| C．It is a permanent physical condition. | D．It is beyond any medical means. |
| A．A hospital. | B．A specialist. |
| C．A relative. | D．An app. |
| A．The application of the app. | B．The causes of the kid’s ear problem. |
| C．The purpose of developing the app. | D．The experiment of the smartphone. |
| A．It will upgrade the medical technology. | B．It will hit the market in the near future. |
| C．It will help children do better academically. | D．It will save doctors medical operations. |
5 . A drug used to treat severe bleeding could save thousands of lives for mothers giving birth. A global trial of the drug found it reduced the risk of bleeding deaths during childbirth by nearly one-third. The study involved 20,000 women in 21 countries, mainly in Africa and Asia. The trial was carried out by London's School of Hygiene and Tropical Medicine. The drug is called d tranexamic acid (氨甲环酸). It is low-cost and researchers said it does not cause serious side effects for mothers or babies.
The drug is used to treat mothers for severe bleeding during childbirth, also known as postpartum hemorrhage (产后出血).It is the leading cause of mother’s death worldwide, according to the World Health Organization.
Haleema Shakur is the project director of the trial. She says despite medical advances in many countries, severe bleeding after childbirth remains a big problem in some parts of the world. “It's one of the biggest killers of mothers. In Africa and Asia. about 10 percent of women will end up with severe bleeding. " The drug works by stopping blood clots(血凝块) from breaking down after a mother gives birth. The treatment can prevent the need for doctors to perform surgery to find the source of bleeding.
Shakur said the best results were reported when the drug was given to women as soon as possible after childbirth, “The earlier you give it- so within the first three hours of giving birth—the better the effect is. ”
The next step will be to get the drug where it is needed provide training for doctors and nurses on how to use it. During the trial, women were given the drug in a hospital. But researchers are looking for easier ways to administer the drug so it can be more widely used in small clinics and rural areas.
1. Tranexamic acid is a drug that________ .| A．should be used for every mother |
| B．helps mothers before giving birth |
| C．ensures most new-born babies’ health |
| D．can help mothers giving birth stop bleeding |
| A．To know how much the drug is. |
| B．To get permission to use the drug. |
| C．To let more people know the drug. |
| D．To make medical staff know how to use the drug. |
| A．The more mothers use the drug, the better its effect is. |
| B．African and Asian countries made great progress in medicine. |
| C．There is a long way to go before the drug can be used more widely. |
| D．Postpartum hemorrhage is the leading cause of women’s death. |
| A．Care for the Health of Mothers |
| B．How Can We Use Tranexamic Acid Well? |
| C．Childbirth Drug Greatly Reduces Bleeding Deaths |
| D．What's the Biggest Killer of Mothers? |
