【明報專訊】Across 1. Rare-earth metals (稀土金屬) are a group of elements that is now widely used in making _ _ _ _ _ _ _ (數碼) gadgets such as smartphones and computers. 3. It is believed that around 80% of earth's _ _ _ _ (金) is still buried underground. 5. Metals are limited and thus it should be recycled. In Hong Kong, you can put aluminum cans(鋁罐) in _ _ _ _ _ _ recycling bins. Down 2. _ _ _ _ _ _ (合金) are materials made by mixing metals with other substances, or mixing two or more metals to give the material a more desirable characteristics such as heat resistance or strength. 4. _ _ _ _ _ _ (銅) is one of the oldest metals used by humans. It is strong enough for making weapons and tools. (Answers on next text) ■Glossary element (n) 化學元素 bury (v) 埋藏 desirable (adj) 令人滿意的 resistance (n) 抵抗力 [Smarties' Power English 第204期]
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