在以下网络威胁中，不属于信息泄露的是______。A．数据窃听 B．流量分析 C．拒

对下面语段中的画线句子修改不正确的一项是[ ]

　　“五四”青年节那天，①“火红的五月”歌咏大赛在粉饰一新的我校新落成的大礼堂里举办。②校长也荣幸地来到现场。⑧炫目的舞台灯光和背景音乐，特别是各个教学班的精彩表演令大赛气氛一浪高过一浪。此刻，名次已不再重要，因为同学们意识到，④比赛既是未来一份美好的回忆，也是今天一份真实的参与体验。

A．①处修改：去掉“粉饰一新的”

B．②处修改：“荣幸”改为“高兴”

C．③处修改：“特别是”改为“以及”

D．④处修改：将“未来一份美好的回忆”和“今天一份真实的参与体验”交换位置

下列能量转化的实例中，将内能转化为机械能的是   [ ]

A. 太阳能电池发电  

B. 水蒸气把壶盖顶起    

C. 电灯发光    

D. 弹弓将石头弹出

证券业从业人员、证券业管理人员和国家规定禁止买卖股票的其他人员，不得直接或间接持有、买卖股票、经批准发行的国债和基金等。( )

Spiders of many species change color to match the pigmentation of the flowers they sit on. The insects preyed on by those spiders, unlike human beings, possess color discrimination so acute that they can readily see the spiders despite the seeming camouflage. Clearly, then, it must be in evading their own predators that the spiders’ color changes are useful to them.
Which of the following, if tree, most strengthens the argument

A．Among the animals that feed on color-changing spiders are a few species of bat, which find their prey through sound echoes.

B．Certain animals that feed on color-changing spiders do so only sparingly in order to keep from ingesting harmful amounts of spider venom.

C．Color-changing spiders possess color discrimination that is more acute than that of spiders that lack the ability to change color.

D．Color-changing spiders spin webs that are readily seen by the predators of those spiders.

E．(E) The color discrimination of certain birds that feed on color-changing spiders is no more acute than that of human beings.

请根据所提供的单据，完成相关的判断题以下问题。

该批货物向天津海关申报的日期为2005年7月1日。（）