A-A+
Charles Goodyear's discovery of vulcanized rub
问题详情
Charles Goodyear"s discovery of vulcanized rubber began when he inadvertently spilled a mixture of rubber and sulfur on a hot stove.
A. experimentally
B. unceasingly
C. incompetently
D. accidentally请帮忙给出正确答案和分析,谢谢!
参考答案
正确答案:D
[答案] D [词义辨析] inadvertently'“出于无心地”与D项的accidentally“偶然地”意义比较接近。Experimentally“试验地”;unceasingly“不停地”;incompetently“不胜任地”。