下列各物质的用途与该物质的化学性质有关的是（ ）
A．用一氧化碳冶炼金属
B．石墨用作干电池的电极
C．金刚石用于裁玻璃
D．活性炭用于除冰箱中的异味
A、用一氧化碳冶炼金属是利用一氧化碳的还原性，一氧化碳与金属的化合物反应还原出金属，所以属于化学性质，故A正确；
B、石墨用作干电池的电极是利用石墨的导电性，没有新物质生成，属于物理性质，故B错；
C、金刚石用于裁玻璃是利用金刚石的硬度大，属于物理性质，故C错；
D、活性炭用于除冰箱中的异味是利用活性炭疏松多孔，具有吸附性，没有新物质生成，属于物理性质，故D错．
故选A．
I had worked that day, as a nurse. Now I faced the dirty supper dishes. I wanted to 1 why Jimmy hadn’t phoned as usual to say “Good night” to Bob and Tom. “Maybe Daddy's 2 working on an accident,” I said to Bob. “Go to 3 now. You'll see him in the morning.” Soon there was a knock at the door. “There 4 be something wrong with your phone,” my neighbor told me. “The City Police Station wants you to 5 .” I went into the living room and dialed. Then I 6 the words every police wife fears (害怕): “Your husband has been hurt.” When I reached the hospital, my heart sank (下沉). The entrance was jammed with TV-news trucks. In the 7 I saw Jimmy’s best friend, Smith. “Just tell me -is he alive ?” I asked. Smith 8 and didn’t answer. Then I found my younger sister, Mandy. “He’s 9 .” she told me, and we began to cry together. Later, Smith told me 10 had happened. In the morning, when my little Bob asked, “Where’s Daddy?” I 11 him into my arms and tried to explain. “A bad man 12 Daddy last night.” I said. “Daddy can’t come home any more. He’s in heaven(天堂) now.” My son looked at me, his blue eyes 13 the picture of trust(相信). “Do they have 14 in heaven ?” he asked. “Can I call him ?” “No, Bob, Daddy still loves you, but Daddy can’t 15 ”.
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