A-A+
Be suspicious about water from other sources
问题详情
Be suspicious about water from other sources, such as ponds, streams, wells, tanks, water trucks or public standpipes.
A. brave
B. doubtful
C. quiet
D. careful请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：B
答案：B suspicious“可疑、猜疑”；doubtful“怀疑”；brave“勇敢”；quiet“安静”；careful“小心”。句意：不能相信水塘、河流、水井、运水船、运水车或公共水管子的水是清洁的。
