B．it can be found in living things

　　C．its mass production has been realized

　　D．its raw materials are abundant in nature

　　69. What are the inventors doing in the lab?

　　A．Replacing carbon fibers with shrilk.

　　B．Testing shrilk's use in wet conditions.

　　C．Making shrilk out of used household goods.

　　D．Improving shrilk’s flexibility for medical purposes.

　　70. Which of the following can be the best title for the passage?

　　A．Recent Progress in Environmental Protection

　　B．Benefits of Insects in Scientific Research

　　C．The Harm of One­time Products

　　D.A Possible Alternative to Plastic

　　2017·湖北卷]

　　E

　　Brrriiinnng. The alarm clock announces the start of another busy weekday in the morning. You jump out of bed, rush into the shower, into your clothes and out the door with hardly a moment to think. A stressful journey to work gets your blood pressure climbing. Once at the office, you glance through the newspaper with depressing stories or reports of disasters. In that sort of mood, who can get down to work, particularly some creative, original problem­solving work?

　　The way most of us spend our mornings is exactly opposite to the conditions that promote flexible, open­minded thinking. Imaginative ideas are most likely to come to us when we're unfocused. If you are one of those energetic morning people, your most inventive time comes in the early evening when you are relaxed. Sleepy people's lack of focus leads to an increase in creative problem solving. By not giving yourself time to tune_into_your_wandering_mind,_you're missing out on the surprising solutions it may offer.

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