《童年》中外公为什么要抽打雅科夫家的萨沙?
参考答案:米哈伊尔舅舅唆使雅科夫家的萨沙把顶针烧得滚烫,本想戏弄格里高里师傅,结果外公戴上了这枚顶针,此外,萨沙还告密。
CT值的定义是以下列哪种物质的衰减系数为标准来计算各种组织的CT值()
A.空气
B.骨
C.水
D.脑组织
E.以上都不是
The winter of 1990 was extremely bad. _____ most people say it was the worst winter of their lives. [ ]
A. At last
B. In fact
C. In a word
D. As a result