問題詳情
【題組】19
(A) We need the ozone layer to protect ourselves.
(B) And the amount of carbon dioxide in the atmosphere continues to increase.
(C) Scientists call this warming of the Earth and its atmosphere the “greenhouse effect.”
(D) Gases such as carbon dioxide, ozone, and water vapor absorb this energy and create more heat.
參考答案
答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)