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（A）根据句意及首字母提示完成句中所缺单词。
1. He can’t hear what you said, he is d_______.
2. Many d_______ are caused by bacteria（细菌）.
3. Modern t______ makes the world “smaller” than it used to be.
4. The thief got into the room t_______ the window.
5. The computer is now a necessary and important t________ in many businesses.
1. He can’t hear what you said, he is d_______.
2. Many d_______ are caused by bacteria（细菌）.
3. Modern t______ makes the world “smaller” than it used to be.
4. The thief got into the room t_______ the window.
5. The computer is now a necessary and important t________ in many businesses.
