题型：语法填空（语篇） 题类：模拟题 难易度：困难
黑龙江省大庆第一中学2019届高三英语第四次模拟（最后一卷）试卷（音频暂未更新）
A few people have lucid (清醒的) dreams, in the dreamer is aware they're dreaming and can control the experience. Some others can learn (have) lucid dreams. The practice can be used to deal with frightening dreams. However, its potential has been limited by it often (be) so hard to achieve. Now, researchers have developed the most effective method yet for promoting lucid dreams.
The researchers let 121 adults aged 19 to 75 pick something (see)in a previous dream. It was called a "dreamsign" that can serve a reminder to become lucid when met again. The (volunteer) were then handed capsules. Each person got a high-dose (大剂量的) capsule, a low-dose capsule and a placebo (无效对照剂) capsule, but they couldn't tell which was which. On three occasions, they woke in middle of the night, took a capsule, imagined their dreamsign and went back to sleep. The high dose was most effective, causing lucid dreams in 42 per cent of participants. About 27 per cent (report) lucid dreams with the low dose and 14 per cent after taking the placebo capsule.
The potential applications are (excite). "This new method has the success rate we need to be able to (proper) do research on lucid dreaming," says Denholm Aspy at the University of Adelaide in Australia.
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