小亮学习化学的兴趣很大，经常回家做小实验．
（1）他发现家中某些材料可替代化学仪器．图中你认为A适宜代替______，B适宜代替______．
（2）他在制作“叶脉书签”时进行了如下操作：
A、选择外形完整，大小合适，具有网状叶脉的树叶，用水将树叶刷洗干净．
B、将树叶放在约10%的氢氧化钠溶液中煮沸，当叶肉呈黄色后取出树叶．
C、将叶子平铺在玻璃板上，用软牙刷慢慢刷去叶肉，稍稍晾干后夹在书中压平．
小明发现他的操作过程不尽合理，操作______（填字母）中还缺少用水清洗过程．
（1）眼药水瓶可以代替胶头滴管，饮料吸管可以代替玻璃导管，所以本题答案为：胶头滴管，玻璃导管；
（2）制好的叶脉书签需用水冲洗掉残余的氢氧化钠溶液，所以本题答案为：C．
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| Norman Bethune is one of China's most famous heroes, but he wasn't Chinese-he was Canadian. He gave his life to helping Chinese people. Norman Bethune 1 born in 1890. He became a 2 in 1916, and he went to the front to look after injured soldiers in the First World War. He saw many soldiers die in the war. Later he invented new treatments to 3 soldiers, and medical tools to use outside hospitals. In 1938 he came to China to treat the Chinese soldiers in the mountains north of Yan'an. There were 4 doctors, so he had to work very hard. He opened hospitals to give treatment to local people and soldiers, and to train doctors and nurses. He also wrote books so that doctors can learn about new treatments. Dr Bethune worked very hard without stopping to 5 . Once, he performed operations 6 69 hours without stopping, and saved 112 people. He 7 working in spite of cutting his hand during an operation. In the end, he died because he did not take care of his 8 . Dr Bethune's work with the Chinese soldiers made 9 a hero in China. There are books and films about him, and he is 10 remembered in both Canada and China. | ||||
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