Đáp án:
effects (n): ảnh hưởng
emissions (n): sự phát thải
gases (n): khí
layers (n): tầng, địa tầng
=> Certain gases in the atmosphere, such as carbon dioxide, methane and nitrous oxide, block heat from escaping.
Tạm dịch: Một số khí nhất định trong khí quyển, chẳng hạn như carbon dioxide, mêtan và oxit nitơ, ngăn nhiệt thoát ra ngoài.
Đáp án cần chọn là: C
Choose A, B, C, or D that best completes each sentence. A layer of greenhouse gases - primarily water vapor, and carbon dioxide - acts as a _______ blanket for the Earth, absorbing heat and warming the surface.
A. Thermal
B. Hot
C. Heat
D. heating
Choose A, B, C, or D that best completes each sentence. Methane is a far more active _______ than carbon dioxide, but also one which is much less abundant in the atmosphere.
A. greenhouse gas
B. greenhouse effect
C. climate change
D. emission
Choose A, B, C, or D that best completes each sentence. Carbon dioxide is released through _______ processes such as respiration and volcano eruptions and through__________activities such as deforestation, land use changes, and burning fossil fuels.
A. natural / human
B. Human / human
C. Man-made / ordinary
D. Ordinary / man-made
Choose A, B, C, or D that best completes each sentence. Humans_______ atmospheric carbon dioxide concentration by a third since the Industrial Revolution began.
A. Increase
B. Have increased
C. Had increased
D. Were increasing
Choose A, B, C, or D that best completes each sentence.
Question: The vegetation layers in Cat Ba Archipelago form spectacular and scenic landscapes and make the site become ______ of all Vietnam's typical ecosystems
A. home
B. house
C. scenery
D. basis
Choose the best answer.________is the gradual warming of the earth because of heat trapped by carbon dioxide and other gases in the atmosphere.
A. Atmosphere
B. Ecosystem
C. Greenhouse effect
D. Diversity
Choose A, B, C, or D that best completes each sentence.
Question: Volunteers can organize _______ campaigns to collect items such as books, clothing and shoes.
A. donation
B. charity
C. helping
D. supporting
Choose A, B, C, or D that best completes each sentence. The next dry season will be extremely severe _______ further saltwater intrusion, water and rain shortages, and heat waves.
A. Because
B. Although
C. due to
D. thanks to
Choose A, B, C, or D that best completes each sentence. In some institutions, A-levels can also be awarded in combination with other ______, such as International Baccalaureate certificates.
A. Examinations
B. Qualifications
C. Courses
D. levels
