2. Some researchers believe that             that a cure for AIDS will be found. (doubt)

很多研究人員都相信治療艾滋病的方法會被找到，這是毫無疑問的。

2. there is no doubt考查there句型的用法。在本句中，表示"毫無疑問"用句型there is no doubt that。 還有there is no need to do sth., There is no point in doing sth.等說法。

題目來源：高考丟分題英語 > Unit 4 Global warming

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