D. review whether people with cognitive problems have a protein called tau or not.
Giải bởi qa.haylamdo.com
Đáp án C
Như được đề cập trong đoạn 3, chụp ảnh cắt lớp nhờ phóng xạ là một phương pháp để ____________.
A. phân biệt giữa số lượng protein T trong người bình thường và trong người có vấn đề về nhận thức.
B. chẩn đoán ai là người dễ mắc bệnh Alzheimer hơn.
C. quan sát sự phát triển của protein T trong não của đối tượng nghiên cứu.
D. đánh giá liệu những người có vấn đề về nhận thức có protein T hay không.
Căn cứ thông tin đoạn 3:
The study, presented at the Alzheimer’s Association International Conference in Los Angeles by researchers from Vanderbilt University and which has not yet been peer-reviewed, used scans from a method called positron emission tomography. That allowed them to look at the way clumps of a protein called tau were spread in the brains of 123 men and 178 women without cognitive problems, as well as 101 men and 60 women with mild cognitive problems – although not yet diagnosed with Alzheimer’s disease.
(Một nghiên cứu, được trình bày tại Hội nghị quốc tế Hiệp hội Alzheimer ở Los Angeles bởi các nhà nghiên cứu của đại học Vanderbilt và vẫn chưa được kiểm duyệt, đã sử dụng các hình ảnh cắt lớp từ một phương pháp gọi là chụp ảnh cắt lớp nhờ phóng xạ. Phương pháp này cho phép họ quan sát cách mà một nhóm protein có tên gọi là T phát triển trong não 123 người đàn ông và 178 phụ nữ không có vấn đề về nhận thức, cũng như não của 101 đàn ông và 60 phụ nữ có vấn đề về nhận thức ở mức nhẹ - mặc dù vẫn chưa được chẩn đoán là bị Alzheimer).
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.
How might volunteering contribute to lower blood pressure? Performing volunteer work could increase physical activity among people who aren’t otherwise very active, says lead study author Rodlescia Sneed, a doctoral candidate in social and health psychology at Carnegie Mellon University. It may also reduce stress. “Many people find volunteer work to be helpful with respect to stress reduction, and we know that stress is very strongly linked to health outcomes,” she says.
As with any activity thought to improve health, researchers are trying to identify the specific characteristics of volunteering that provide the greatest benefit. For example, how much time would you need to put into volunteer work to lower your blood pressure or live longer? In the Carnegie Mellon study, 200 hours of volunteering per year correlated to lower blood pressure. Other studies have found a health benefit from as little as 100 hours of volunteering a year. Which types of volunteer activities improve health the most? No one really knows. Sneed speculates that mentally stimulating activities, like tutoring or reading, might be helpful for maintaining memory and thinking skills, while “activities that promote physical activity would be helpful with respect to cardiovascular health, but no studies have really explored this.”
One key for deriving health benefits from volunteering is to do it for the right reasons. A 2012 study in the journal Health Psychology found that participants who volunteered with some regularity lived longer, but only if their intentions were truly altruistic. In other words, they had to be volunteering to help others—not to make themselves feel better.
The Greek philosopher Aristotle once surmised that the essence of life is “To serve others and do good.” If recent research is any indication, serving others might also be the essence of good health.
(Source: https://www.health.harvard.edu/)
What does the passage mainly discuss?
Mark the letter A, B, C, or D to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.
Mark the letter A, B, C, or D to indicate the word that differs from the other three in the position of the primary stress in each of the following questions.
Mark the letter A, B, C or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.
Today, illegal hunting still threatens many species, especially large mammals such as tigers, rhinoceros, bears and even primates.
Mark the letter A, B, C, or D to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.
I was an MBA student in the USA and I lived in the university’s coed dormitory. In my culture, usually, if a woman talks to a man, it is a sign of romantic interest. (23)_______, in the first few days of school, I found it strange that so many women were talking to me and I was under the impression that some women on my dormitory floor were interested in me. To (24) _____ their politeness, I would buy them flowers or offer small gifts, as is done in my country. However, I was quite surprised to see that these same women now seemed (25) _______ around me. One was even quite offended and told me to leave her alone. Eventually I talked to the residence adviser on my floor to see what I was doing wrong, and he explained to me the way men and women usually interact in the USA. I was quite relieved to hear that (26) _____ was wrong with me, but rather with the way I was interpreting my conversations with women. Even though I did not find the love of my life while I was in the USA, I still made many good female friends afterwards (27) _______I still maintain contact.
(Source: https://books.google.com.vn)
I still made many good female friends afterwards (27) _______I still maintain contact.
Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
She was sitting on the grass, out of breath. She ____. She shouldn't have run so long.
Mark the letter A, B, C, or D to indicate the word that differs from the other three in the position of the primary stress in each of the following questions.
