资本主义经济危机的实质是( )。A．产品严重匮乏 B．货币大幅贬值 C．国际收支极

一年轻女性，腹胀2个月入院。妇检：子宫前位，大小、质地正常，右侧附件区扪及直径6cm大小包块，实性，形状不规则，粘连，后穹隆扪及实性结节状增厚，左侧未扪及包块。剖腹术中发现血性腹水，右侧卵巢肿瘤质脆，并与大网膜粘连。最适宜的处理是( )

A．右侧卵巢肿瘤切除术，术后化学治疗
B．子宫全切除术+右附件切除术+大网膜切除术，术后化学治疗
C．双附件切除术+大网膜切除术，术后化学治疗
D．子宫全切除术+双附件切除术，术后化疗
E．子宫全切除术+双附件切除术+大网膜切除术+后腹膜淋巴结切除术，术后化学治疗

What if we meet a situation ______ we won’t be able to deal with?

A．where

B．in which

C．when

D．that

You can’t imagine ______ when they received these nice Christmas presents.[ ]

A. how they were excited              

B. how excited they were

C. how excited were they                

D. they were how excited

压力式温度计由温包、毛细管和弹簧管构成一个封闭系统，系统内充有（）物质。

A、保温

B、感温

C、感应

D、固体

简述慢性高血压性视网膜病变的分级以及每一级的主要临床表现。