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问题 选择题

物质变化中常伴随能量变化，下列变化过程中吸收热量的是（　　）

A．镁带燃烧

B．生石灰与水反应

C．氢氧化钠溶于水

D．碳与二氧化碳反应

答案

答案：D

题目分析：物质变化中常伴随能量变化，具体表现为吸热、放热现象，A现象镁带燃烧放热；B选项生石灰与水反应放出热；C选项氢氧化钠溶于水放出热量；D选项碳与二氧化碳的反应是吸热反应，答案选择D.

完形填空

The elephants the largest animal walking on Earth．An elephant can carry aloud Of 1,200 pounds． 小题1:        Elephants can be trained to Carry logs(圆木)with their trunks．

小题2:       There are two kinds of elephants：the African elephant and the Indian elephant． African elephants can be identified(识别)by the larger ears．小题3:   Another Name for the Indian elephant is the Asian elephant.The greatest threat(威胁)to elephants is the ivory(象牙)trade．From 1979 to 1989 was a bad time for African elephants．小题4:        In 1989 an international agreement Limited(限制)the trade in ivory，protecting elephants from being killed，but elephants are still Being killed for ivory．小题5:     Don’t even buy anything that looks like ivory!

请仔细阅读短文，将下面五句话还原到文中空白处，并将其标号填入表格相应的位置。

A．They eat 300 pounds of food a day．

B．Please don’t ever buy anything made from ivory!

C．About 70，000 wild elephants were killed for ivory each year．

D．Indian elephants are easier to identify because of their smaller ears．E．They also use their trunks for drinking water，bathing，eating and communicating．
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改错题

找出下面文字在语言表述方面存在的两处错误，并加以改正。

        2005年春节联欢晚会上，由邰丽华领舞、21名聋哑人表演的《千手观音》让观众惊叹不已。在精湛的舞台灯光与背景音乐的烘托下，演员们绘声绘色的表演，使台下数千观众如痴如醉。这些聋哑人不仅以优美的舞姿，更以顽强的毅力和执著的人生追求深深地震撼了人们。

错 误 改 正：

第一处________________________________________                                               

第二处________________________________________                                               

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