PowerDesigner是SYBASE公司提供的CASE工具，它包含多个模块，其中

Ivy told Nancy that she            what she was doing during the vacation.

A．was just asked

B．was just asking

C．had just been asked

D．had just asked

— Must I finish my homework before I go home? 

— No, you ____. But you ____ finish it before two. [ ]

A. mustn't; must

B. must; mustn't

C. needn't; must

D. needn't; mustn't

对抑制Ⅰ型超敏反应有重要意义的嗜酸性粒细胞颗粒是（）

A.吞噬素

B.阳离子蛋白

C.胶原酶

D.组胺酶

E.溶菌酶

在32位的计算机中，一个char型数据所占的内存长度的字节是

A．4

B．1

C．2

D．8

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