Reading passage (heart attacks)
number of possible causes. An early-morning rise in blood pressure, heart rate, and concentration of heart stimulating hormones, plus a reduction of blood flow to the heart, may all contribute to the higher incidence of heart attacks between the hours of 8:00 A.M. and 10:00 A.M.
In other studies, both birthdays and bachelorhood have been implicated as risk factors. Statistics reveal that heart attack rates increase significantly for both females and males in the few days immediately preceding and following their birthdays. And unmarried men are more at risk for heart attacks than their married counterparts. Though stress is thought to be linked in some way to all of the aforementioned risk factors, intense research continues in the hope of further comprehending why and how heart failure is triggered.
(Source: https://www.cdc.gov/)
In other studies, both birthdays and bachelorhood have been implicated as risk factors. Statistics reveal that heart attack rates increase significantly for both females and males in the few days immediately preceding and following their birthdays. And unmarried men are more at risk for heart attacks than their married counterparts. Though stress is thought to be linked in some way to all of the aforementioned risk factors, intense research continues in the hope of further comprehending why and how heart failure is triggered.
(Source: https://www.cdc.gov/)
According to the passage, which of the following is NOT a possible cause of many heart attacks?
According to the passage, which of the following is NOT a possible cause of many heart attacks?
Chọn một phương án bên dưới để kiểm tra đáp án ngay:
Đáp án chính thức: C
Hướng dẫn giải chi tiết
(AI giải đề cho tôi)
Theo đoạn văn: 'An early-morning rise in blood pressure, heart rate, and concentration of heart stimulating hormones, plus a reduction of blood flow to the heart, may all contribute to the higher incidence of heart attacks.' Các nguyên nhân được nêu gồm: huyết áp tăng (B), nhịp tim TĂNG (không phải giảm), nồng độ hormone kích thích tim tăng (D), và giảm lưu lượng máu đến tim (A). Do đó 'lower heart rate' (nhịp tim giảm) KHÔNG phải là nguyên nhân có thể gây nhồi máu cơ tim. Đáp án C, khớp với đáp án nguồn 47.C (bảng ĐÁP ÁN trang 4).
Theo đoạn văn: 'An early-morning rise in blood pressure, heart rate, and concentration of heart stimulating hormones, plus a reduction of blood flow to the heart, may all contribute to the higher incidence of heart attacks.' Các nguyên nhân được nêu gồm: huyết áp tăng (B), nhịp tim TĂNG (không phải giảm), nồng độ hormone kích thích tim tăng (D), và giảm lưu lượng máu đến tim (A). Do đó 'lower heart rate' (nhịp tim giảm) KHÔNG phải là nguyên nhân có thể gây nhồi máu cơ tim. Đáp án C, khớp với đáp án nguồn 47.C (bảng ĐÁP ÁN trang 4).