Câu hỏi:
17/04/2020 418Read 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. Though Edmund Halley was most famous because of his achievements as an astronomer, he was a scientist of diverse interests and great skill. In addition to studying the skies, Halley was also deeply interested exploring the unknown depths of the oceans. One of his lesser-known accomplishments that was quite remarkable was his design for a diving bell that facilitated exploration of the watery depths.
The diving bell that Halley designed had a major advantage over the diving bells that were in use prior to his. Earlier diving bells could only make use of the air contained within the bell itself, so divers had to surface when the air inside the bell ran low. Halley's bell was an improvement in that its design allowed for an additional supply of fresh air that enabled a crew of divers to remain underwater for several hours.
The diving contraption that Halley designed was in the shape of a bell that measured three feet across the top and five feet across the bottom and could hold several divers comfortably; it was open at the bottom so that divers could swim in and out at will. The bell was built of wood, which was first heavily tarred to make it water repellent and was then covered with a half-ton sheet of lead to make the bell heavy enough to sink in water. The bell shape held air inside for the divers to breathe as the bell sank to the bottom.
The air inside the bell was not the only source of air for the divers to breathe, and it was this improvement that made Halley's bell superior to its predecessors. In addition to the air already in the bell, air was also supplied to the divers from a lead barrel that was lowered to the ocean floor close to the bell itself. Air flowed through a leather pipe from the lead barrel on the ocean floor to the bell. The diver could breath the air from a position inside the bell, or he could move around outside the bell wearing a diving suit that consisted of a lead bell-shaped helmet with a glass viewing window and a leather body suit, with a leather pipe carrying fresh air from the diving bell to the helmet
Halley's bell was better than its predecessors because it
Đáp án chính xác
Sách mới 2k7: Tổng ôn Toán, Lí, Hóa, Văn, Sử, Địa…. kỳ thi tốt nghiệp THPT Quốc gia 2025, đánh giá năng lực (chỉ từ 110k).
Quảng cáo
Trả lời:
Giải bởi Vietjack
Đáp án là B.
Quả chuông của Halley tốt hơn so với những cái chuông trước đó bởi vì nó
A. To hơn
B. Cung cấp nhiều không khí hơn
C. Trọng lượng nhẹ hơn
D. Có thể nâng lên nhanh chóng
Dẫn chứng: Halley's bell was an improvement in that its design allowed for an additional supply of fresh air that enabled a crew of divers to remain underwater for several hours.
Nhà sách VIETJACK:
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 1:
Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions
She applied for training as a pilot, but they turned her ________ because of her poor eyesight
Xem đáp án »
17/04/2020
20,195
Câu 2:
Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions
You look tired. Why don’t we ________ and have a good rest?
Xem đáp án »
18/04/2020
14,667
Câu 3:
Mark the letter A, B, C or D on your answer sheet to indicate the most suitable respond to complete each of the following exchanges
Joanne: “You should have flown with the earlier flight!” Alex: “___________”
Xem đáp án »
17/04/2020
8,601
Câu 4:
Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions
If only I had taken his advice
Xem đáp án »
18/04/2020
7,825
Câu 5:
Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions
You mustn’t ________ these difficult exercises; do them all
Xem đáp án »
17/04/2020
6,367
Câu 6:
Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction in each of the following questions
After being questioned for a few minutes, John finally admitted to steal his friend’s money
Xem đáp án »
17/04/2020
6,012
Câu 7:
Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions
George didn’t attend school for six weeks as he had to stay in hospital where he was ________ for pneumonia
Xem đáp án »
17/04/2020
5,799
về câu hỏi!