1971年美国总统尼克松发表演说时说：“同二战结束时相比，我们遇到了做梦都没有想

计算：（﹣1）⁰﹣|tan45°﹣2|+2^﹣5×2⁸=（    ）

短文填词。

Dear Jack,

     How's it (1)g           ? I had a very (2)u             experience on Sunday. At around ten o'clock in the

morning, I was (3)w             down the street when a UFO came down. (4)A             alien got out and

went down Center Street. I (5)f             it to see where it was going, and I was very (6)s             when

it went into a souvenir shop. While it was looking at the souvenirs, the shop assistant (7)c             the

police. Before the police arrived, the alien (8)l            the shop and then visited the Museum of

(9)F            . While the alien was in the museum, I phoned the TV (10)s           . Isn't that amazing!

一个用品信息表goods_inf(gno，gname,gnum,Stime)，把所有的用品数量增加100，正确的操作是 ______。

A．UPDATE goods_inf SET gnum=100

B．UPDATE goods_inf SET gnum=gnum+100

C．UPDATE goods_inf WHERE gnum=gnum+100

D．UPDATE goods_inf LIKE gnum=gnum+100

《淮南子·兵略训》有云：“千人同心，则得千人力；万人异心，则无一人之用。”这句话是说[ ]

①集体需要它的成员之间的团结与合作

②集体与个人是对立的

③要增强集体的凝聚力

④个性不同不利于集体的形成和发展

A．①④

B．②③

C．①③

D．①②

数据的存储结构又称物理结构，数据存储在计算机中的域是( )
Ⅰ、自身信息域 Ⅱ、指向信息域 Ⅲ、链接信息域

A．Ⅰ和Ⅱ

B．Ⅰ和Ⅲ

C．Ⅰ

D．均是