【正确答案】 B

【答案解析】[解析] 由于当地经济欠发达，边远地区的人生活资源依然不很丰富。difficult困难的。如：This a diffcultthing. modest适度的，少量的，最符合题意。如：Having some modest drinking every day does not increase health risk very much. 每天适度饮酒不会对健康造成威胁。arduous费力的。如：Although the work was arduous, he finished it in a short time. 虽然这项工作很费力，他仍然很快就做完了。domestic国内的，家里的。如：She felt fenced in by domestic routine. 她觉得自己完全被家务事束缚住了。