We often think that our affairs, great or small, must be tended continuously and in detail, or our world will break apart, and we will lose our places in the universe. That is not true, or if it is true, then our situations were so temporary that they would have collapsed (崩溃} anyway.

    Once a year or so get away for a day. On the eve of my day of absence, I inform housemates, my family and close friends that I will not be reachable for twenty-four hours; then I disconnect the telephone. I sat for at least an hour in a very hot bathtub; then I lay out my clothes in preparation for my morning escape, and knowing that nothing will disturb me, I sleep well.

    On the morning I wake naturally, for I will have set no clock, nor informed my body timepiece when it should alarm. I dress in comfortable shoes and casual clothes and leave my house going no place. If I am living in a city, I wander streets, window-shop, or stare at buildings. I enter and leave public parks, libraries, and theatres. I stay in no place for very long.

    Every person needs to take one day away. A day in which one consciously, separates the past from the future. Jobs, family and friends can exist one day without any one of us. Each person deserves the day in which no problems are faced up to, no solutions searched for, We need hours of aimless wandering or sitting on park benches, observing the mysterious world of ants.

    If we step away for a time, we are not as many may think, being irresponsible, but rather we are preparing ourselves to more ably perform our duties. When I return home, Jam always surprised to find some questions I sought to evade had been answered and some entanglements (瓜葛) I had hoped to flee had become separated out in my absence. A day away can help drive away the bitterness, transform hesitation, and renew the spirit.

阅读理解

    Paying a higher price than usual for a ticket to see a film in 3D is the annoyance of many a cinema-goer's life.

    But there may be a benefit to doing so, as a study has found that 3D films exercise the brain and improve short-term functioning in a similar way to brain-training tests.

    The research found that people who watched a movie in 3D improved cognitive (认知) skills, compared to those who watched it in 2D.

    The research was led by neuroscientist(神经学家) Dr Patrick Fagan from Goldsmiths University in London. More than 100 people took part in the experiment, where participants watched Disney film Big Hero 6 in either standard format or RealD 3D.

    They also carried out a brain-training-style test before and after seeing a section from the film. The test covered memory, reaction times and cognitive function and the results were compared later.

    According to the research, which was carried out in partnership with science group Thrill Laboratory, participants experienced a 23 percent increase in cognitive processing, as well as an 11 percent increase in reaction times.

     Fagan said that the results showed enough of an improvement in brain function to suggest that 3D could play a part in improving brain power in the future.

    “These findings are more significant than you might think,” he said. “It is a fact that people are living longer and there is a noticeable decline in cognitive brain function in old age which can worsen future quality of life. There has never been a better time to look at ways to improve brain function. The initial results of this study show that 3D films may potentially play a role in slowing this decline.”

    A second part of the experiment involved those watching the film being fitted with headsets that scanned brain activity and this too showed heightened (加强的) activity when watching 3D. According to the results, participants were seven percent more engaged with what they were watching, adding to argument that 3D movies are more like watching real-life—something Professor Brendan Walker from Thrill Laboratory agreed with.

    “As Professor Brendan Walker's test concluded, 3D films are more attractive and heighten the senses — this, in turn, makes the brain run at quicker speeds,” Dr Fagan said.

下列各句中，划线的词语运用正确的一项是（   ）

医疗上用的生理盐水是0.9%的氯化钠溶液．要配制0.9%的氯化钠溶液100g．其中选用仪器或操作正确的是（　　）