某酒店的组织结构呈金字塔状，越往上层（）。
A. 其管理难度与幅度都越小
B. 其管理难度越小，而管理幅度越大
C. 其管理难度越大，而管理幅度越小
D. 其管理难度与幅度都越大
Hardly（）when the lights went out.
A. the performance had begun
B. had the performance begun
C. the performance began
D. did the performance begin
关于CT图像像素的叙述，不正确的是
A. 像素是扫描野和矩阵的比值
B. 实际工作中改变扫描野则可以改变像素的大小
C. 每一个像素可以用CT值表示
D. 扫描野越大则像素越多，故扫描野越大越好
E. 在CT图像中一般CT值较低的像素被转化为黑色
（）I know, he has never worked in that company. He probably told a lie.
As long as
B. As far as
C. As well as
D. As soon as
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