According to the passage, scientists used isotopes from the water of the ice core to determine which of following?
Giải bởi Vietjack
Theo đoạn văn, các nhà khoa họ sử dụng chất đồng vị từ nước trong lõi đá để xác định cái gì:
Lượng không khí đã nổi bọt lên tới bề mặt kể từ khi đá hình thành
Nhiệt độ khí quyển khi đá được hình thành
Ngày mà nước bị giữ trong sông băng
Tốc độ nước bị đóng băng trong sông băng
Đáp án: B. Giải thích: Thông tin nằm ở:
“Instruments were used to measure the ratio of certain isotopes in the frozen water to get an idea of the prevailing atmospheric temperature at the time when that particular bit of water became locked in the glacier.” (Các công cụ đã được sử dụng để đo tỷ lệ của các đồng vị nhất định trong nước đóng băng để xác định nhiệt độ khí quyển phổ biến tại thời điểm khi một lượng nước đặc biệt đó bị khóa trong sông băng.)
Stop acting like a child. In a few weeks, you'll be coming of _______ and nobody will tolerate your foolish behavior any longer.
Professor Wallace has been given a prestigious award in _____ of his pioneering research in treating the AIDS patients.
The expansion of the natural history museum is most _______ the cause of significant revenue increases.
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
I was upset to learn that my first opponent would be Sam Muller, who _______ part in tournaments for no less than ten years.
On Sundays, many people take their cars to service stations _______
Of course, we don’t need this dictionary at present, but in the long ____ it may prove useful.
Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined bold word(s) in each of the following questions.
Have you ever tried using hydrogen peroxide as a person to induce vomiting instead of the good old traditional methods?
It does not seem very probable that Eric will be able to find a new apartment before he has to leave his old one.
Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.
It is important for a teacher to be totally impartial when determining which students will pass or fail.
There are no problems with Dave. He seems ____ after in a proper way.
Had they arrived at the sale early, they ______ a better selection.
According to the passage, the drilling of the glacier in eastern Antarctica was important because it ________
