logo - 刷刷题
下载APP
【单选题】

Scientists have come up with a theory for why time flies when you are having fun and drags when you are bored.
Scans have shown that (62) of activity in the brain change depending on how we focus on a task. Concentrating on time passing, as we do when bored, will (63) brain activity which will make it seem as though the clock is ticking more () . The research, by the French Laboratory of Neurobiology and Cognition, is published in the magazine Science.
In the study, 12 volunteers watched an image while researchers (65) their brain activity using MRI(核磁共振成像) scans. Volunteers were given a (66) of tasks. In one they were told to concentrate simply on the duration of an image, in (67) they were asked to focus on the (68) , and in a third they were asked to concentrate on both duration and color. The results showed that a network of brain regions was (69) when more subjects were paid attention to duration.
It is thought that if the brain is busy focusing on many aspects of a task, then it has to spread its resources thinly, and pays less (70) to time passing. Therefore, time passes without us really (71) it, and seems to go quickly. (72) , if the brain is not stimulated in this way, it concentrates its (73) energies on monitoring the passing of time. This may make time seem to (74) , but in fact it is probably a more accurate perception of reality. (75) the researchers found that the more volunteers concentrated on the duration of the images, the more (76) were their estimates of its duration.
Lead researcher Dr. Jennifer Coull said many of the areas of the brain (77) in estimating time were the same that played a key role in controlling movement, and (78) for action. She said this overlap suggests that the brain may make sense of time as (79) between movements, in much the same way (80) musicians mark time with his foot, or (81) anticipate the sound of a starter’s pistol.

A.
finding
B.
noticing
C.
discovering
D.
spotting
举报
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】谐波成像在临床中的应用不包括()。

A.
基波显像良好的组织、器官
B.
增强心肌和心内膜显示
C.
增强心腔内声学造影剂的回声信号
D.
减少超声噪声干扰
E.
抑制基波回声伪像

【多选题】磁共振成像仪硬件通常由哪些部分组成

A.
主磁体
B.
梯度线圈
C.
脉冲线圈
D.
计算机系统
E.
辅助设备

【单选题】增强MRI成像可用()

A.
马根维显
B.
磁显葡胺
C.
两者均可
D.
两者均不可

【单选题】下列哪类病人不宜做头部核磁共振成像(MRI)检查()

A.
脑出血的病人
B.
人工耳蜗植入的病人
C.
脑外伤的病人
D.
放疗期间的病人
E.
癫痫病史的病人