问题
选择题
Scientists are increasingly _____ that the earth is getting hotter because of carbon dioxide and other gases.
A．convinced
B．confident
C．concerned
D．conscious
答案
答案：A
考查词义辨析。convinced 相信，confident 自信的，concerned 关注的，conscious 有意识的，短语：be convinced that 相信，句意：科学家们越来越相信由于二氧化碳和其它气体地球会变得越来越热。根据语境所以选A。
