当空气中氧的含量降至()以下时,绝大多数物质的燃烧就会停止。
A、11%
B、18%
C、21%
参考答案:A
——Who has ________ marks in English, Wang Lin, Zhang Fang or Li Ming?
——Li Ming. He is ________ at English than any other student in the class.
A.good; better
B.better; best
C.better; better
D.the best; better
患者男,71岁。背部起一肿块,上有粟粒样脓头,肿块渐向四周扩大,脓头增多,色红灼热,高肿疼痛,伴发热恶寒、头痛纳差。考虑诊断为()
A.疔
B.流注
C.丹毒
D.有头疽
E.发