计算：（1）-23÷23×(1-13)2（2）28×34-(-28)×0.5+2

To be honest, I don’t want to tell him unless he ______ me.

A．asked

B．asks

C．will ask

D．has asked

患者，女性，50岁，右眼视力逐渐下降2年，无眼红、眼痛。检查：右眼视力0.1，右眼结膜无充血，角膜透明，前房深度正常，晶状体皮质灰白色，全混浊，核棕黄色混浊，眼底看不清。泪道冲洗，冲洗针头从下泪小点进针，可触及骨壁，冲洗液由上泪点反流，伴有黏脓性分泌物，冲洗液未进入咽喉部。

患者最可能的诊断是（）。

A.青光眼

B.老年性白内障（成熟期）

C.玻璃体混浊

D.慢性泪囊炎

E.急性泪囊炎

The Border Gateway Protocol (BGP) is an interautonomous system. ___49___ protocol. The primary function of a BGP speaking system is to exchange network ___50___ information with other BGP system. This network reachability information includes information on the list of Autonomous System (ASs) that teachability information traverses. BGP-4 provides a new set of mechanisms for supporting ___51___ interdomain routing. These mechanisms include support for advertising an IP ___52___ and eliminate the concept of network class within BGP. BGP-4 also introduces mechanisms that allow aggregation of routes, including ___53___ of AS paths. These changes provide support for the proposed supernettting scheme.

51（）

A. confirmless

B. connectionless

C. answerless

D. classless

工程咨询项目的竣工验收是( )向投资者汇报建设成果和交付新增固定资产的过程。

A．项目业主

B．监理单位

C．合同商

D．设计单位

E．分包商

根据《污水综合排放标准》（第3.1条），污水指（）

A.在生产与生活活动中排放的水的总称

B.在生产与生活活动中排放的超过一定环评指标的水的总称

C.在生产活动中排放的废水

D.在生活活动中排放的废水