B超检查，盆腔有少量积液，为进一步确诊，简单、可靠的方法是A．X线检查 B．腹腔镜检

下列关于大宗交易的说法中，正确的有( )。

A．大宗交易的申报包括意向申报和成交申报

B．申报方数量不明确的，上海证券交易所将按规定视为至少愿以大宗交易单笔买卖最低申报数量成交

C．有涨跌幅限制证券的大宗交易成交价格，由买卖双方在前收盘价的上下30%内确定

D．大宗交易经交易所确认后，买方和卖方不得撤销或变更成交申报，并必须承认交易结果

施工策划阶段质量管理中规定，由质检员会同测量人员对变电站工程控制网进行复测，并报审。

                  of the students in my school are girls.

A．Two fifths

B．Second fifths

C．Two fifth

D．Fifth two

中国手机报彩信版所发送和接收彩信如没有正常接收成功所产生的GPRS流量如何计费（）。

A.免费；

B.按正常GPRS资费收取；

C.均按CMNET接入点计费；

D.均按CMWAP接入点计费；

In 1985 a consumer agency concluded that Xylo brand bicycles are safer to ride than are Zenon brand bicycles. The agency based the conclusion on the ratio of the number of rider injuries to the number of riding hours for each brand of bicycle from 1981 through 1984. Yet for identically designed bicycles manufactured since 1985, the number of rider injuries has been twice as great among riders of Xylos as among riders of Zenons. Therefore, the agency’s conclusion would have been different for the period since 1985.
Which of the following is an assumption that, if tree, supports the claim that the agency’s conclusion would have been different for the period since 1985

A．For the period since 1985, the number of riding hours for Zenons totaled at least half the number of riding hours for Xylos.

B．Of all the bicycles ridden in the period since 1985, the percentage of Xylos ridden was twice the percentage of Zenons ridden.

C．Prior to 1985, Zenon owners were more likely than Xylo owners to report the injuries they sustained while riding their bicycles.

D．In 1985 the agency had miscalculated the ratio for Xylos, for Zenons, or for both.

E．(E) Soon after the agency had issued its report, consumer demand for Xylos increased more rapidly than did consumer demand for Zenons.