Choose the best anwers to complete the passage.
Humans have biological clocks that control their daily (1) _________. Some functions, like sleeping and waking up have a 24-hour rhythm. Others, especially illnesses, have a yearly rhythm. Cold and flus, (2) _________ often happen in winter. Most people get measles during spring and summer.
When travelling by plane, you often cross many time (3) _________. During such trips your internal clocks don't seem to work properly. We call this jet lag. It makes you feel tired and it may take your body's biological clock several days (4) _________used to the new place. People who work night shifts can also have problems with their biological clocks. In general, they may not be (5) _________ alert or active as people (6) _________work during the daytime. They also have more accidents during work. In some cases, they experience more health and sleeping problems than other people.
By using the right medicine, you can (7) _________problems that are connected with different times of day. Heart attacks and strokes often happen in the morning- between the time you get up and noon. Asthma often occurs between midnight and morning hours. So when people (8) _________ a heart disease take their medicine right after waking up, it might prevent a heart attack.
Biological clocks control many rhythms of life. We are (9) _________ learning more and even more about these rhythms. Doctors are looking for new ways to make travelling more (10) _________ and medical treatment more effective.
In general, they may not be as alert or active as people (6) _________work during the daytime.
whomwhichwhosewhoHướng dẫn giải:A. whom: thay thế cho danh từ đóng vai trò tân ngữ
B. which: thay thế cho danh từ chỉ vật
C. whose: thay thế cho sở hữu cách, tính từ sở hữu
D. who: thay thế cho danh từ đóng vai trò chủ ngữ
Danh từ people (chỉ người) đóng vai trò chủ ngữ trong mệnh đề quan hệ nên phải dùng đại từ “who”.
=> In general, they may not be as alert or active as people (6) who work during the daytime.
Tạm dịch: Nói chung, họ có thể không tỉnh táo hoặc năng động như những người làm việc vào ban ngày.
Đáp án cần chọn là: D
