问题
填空题
已知线段b是线段a、c的比例中项，且a＝9，c＝4，那么b＝ ．
答案
6
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已知线段b是线段a、c的比例中项，且a＝9，c＝4，那么b＝ ．
6
| 阅读理解。 | ||||||||||||
| 阅读下列应用文及相关信息，并按照要求匹配信息。 首先请阅读下列电子产品的信息：
1. Jill wants a simple and cheap computer for her daughter’s bedroom that will let her daughter access the internet and run the programme she needs to do her homework. 2. Robert needs a computer for his frequent business trips. Besides checking email, looking for information online and preparing his reports he also wants to be able to watch some of his favourite DVD movies that he takes on his trip. 3. Li Hua is going on holidays and wants a machine that is portable, internet connected and good for multi media playing. As he will be on buses and trains a lot he is looking for something that can be used for a long time without a battery recharge. 4. John always wants to be the first to have the newest technology. He has had an iPad2 for over a year and now he wants to get a machine that will let him experience the latest innovations in games and movies. 5. Karen has recently put on a lot of weight so is planning to start jogging. As she is afraid she’ll get bored she wants a small, simple and inexpensive mp3 player to let her listen to her favourite music while she exercises. |
