下列词语中加粗的字，每对读音都相同的一组是[ ]

A．喧哗/哗众取宠　拘泥/泥沙俱下　咽喉/细嚼慢咽　校勘/犯而不校

B．屋脊/自给自足　汗腺/宪政运动　徭役/尧天舜日　商贾/余勇可贾

C．竣工/怙恶不悛　拜谒/响遏行云　湍急/逸兴遄飞　诤友/峥嵘岁月

D．宁可/息事宁人　模拟/一模一样　屏弃/凝神屏息　诋毁/中流砥柱

Doctors warned sun-starved tourists who received too much sunlight that they were at seriously risk than others of contracting skin cancer.

A．most

B．more

C．grander

D．greater