30.(安徽省合肥市2015届高三第二次教学质量检测)The virus Ebola is reported ______ over 3,000 lives in 5 countries of West Africa by now.

　　A. taking

　　B. having taken

　　C. to take

　　D. to have taken

　　四、完形填空

　　(改编自2015届江苏连云港赣榆海头高级中学高三上期中 You have waited 45 minutes for the valuable 10 minutes’ break between classes. But when the bell for the next class rings, you can’t

　　1

　　how quickly time has passed.

　　If you are familiar with this

　　2

　　, you’ll know how time flies when you are having fun and

　　3

　　when you are bored. Now scientists have

　　4

　　a reason why this is the case.

　　Scans have shown that patterns of activity in the brain

　　5

　　according to how we focus on a task. When we are

　　6

　　, we concentrate more on how time is passing. And this makes our brains

　　7

　　the clock is ticking more slowly.

　　In an experiment

　　8

　　by a French laboratory, 12 volunteers watched an image

　　9

　　researchers monitored their brain activity.

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