[img]2012q2/ct_eyyjsdz2006b_eyyjsdreadc_0773_20121[/img] [br] What causes gum di

游客2023-10-21 53

问题

[br] What causes gum disease?______

选项

答案 Plaque causes gum disease．／Plaque．

解析 (文章第一句话就指出Gum disease is caused by plaque．)

转载请注明原文地址:https://www.tihaiku.com/zcyy/3117195.html

相关试题推荐

随机试题

最新回复(0)