Mouthwashes are not an effective cure for bad breath mainly because ______.
A.they can't cover the thick layers of mucus
B.they can't get to all the offending bacteria
C.they can't mask the bad odor long enough
D.their strong smell mixes with bad breath and makes it worse
第1题
A.水不宜多,保持湿润就可
B.不耐干旱,不甚耐寒,生长适温15-25℃,冬季温度不低于5℃
C.几乎没有病虫害危害
D.喜温暖,稍耐寒,喜湿润,不耐旱,喜半阴,不耐阳光直射。喜富含腐殖质、微酸性的土壤
第2题
A、水不宜多,保持湿润就可
B、不耐干旱,不甚耐寒,生长适温15-25℃,冬季温度不低于5℃
C、几乎没有病虫害危害
D、喜温暖,稍耐寒,喜湿润,不耐旱,喜半阴,不耐阳光直射。喜富含腐殖质、微酸性的土壤
第3题
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!