—Do you think _ important to get enough

小题1:Tom and Fred talked about ____ .

A．their school life

B．some interesting news

C．their life in the past

D．their life in the future小题2:Machines will ____ .

A．do most of the work instead of people

B．do some of the work instead of people

C．do as much work as people

D．do as little work as people小题3:From their talk, we know that ____ .

A．only Fred hopes to fly to the moon

B．both of them hope to fly to the moon

C．one of them hopes to fly to the moon

D．neither of them hopes to fly to the moon小题4:Fred said ____ .

A．he liked fish very much

B．he would like to live under the sea like a fish

C．he would go fishing under the sea

D．he would spend a few days on the moon小题5:Which of the following statements is NOT mentioned?

A．People will be able to fly to the moon in a spaceship.

B．People will have more holidays.

C．Many people will live and work under the sea.

D．All the factories and farms will be built under the sea

把命题“同角的余角相等”改写成“如果……，那么……”形式是______       _____ 。

新中国诞辰60周年庆典上，新疆彩车的一大亮点是所有图案全部为手工绘制，9名美工在北京起早贪黑干了整整18天，一笔一画绘出那些精美的图案。他们中，有汉族、维吾尔族、塔吉克族、回族，不同民族的兄弟团结无间，合作绘制的作品美轮美奂、生动传神。这反映了[ ]

①我国是一个统一的多民族国家

②我国坚持平等、团结和共同繁荣的原则

③我国实施民族区域自治制度

④我国民族分布具有大杂居、小聚居的特点

A．①②③

B．①②④

C．②③④

D．①③④

下列药物中有腐蚀性的是（）。

A.氟化钠

B.氟化亚锡

C.酸性氟磷酸盐

D.硝酸银

E.氟化铝酸铰

下列属于严禁商业性采伐的选项有（）。

A.国防林

B.风景林

C.革命纪念地的林木

D.自然保护区的森林