题干

根据实验目的和实验原理选择恰当的实验材料,是保证实验获得可靠结果的关键因素之一.下列实验材料的选用不恰当的是(  )


A:用花生仁、大米、牛肉干来研究不同食物所含能量的多少

B:用仙人掌来研究植物叶的蒸腾作用

C:用显微镜观察小金鱼尾鳍血管中血液的流动

D:用酵母菌在有氧和无氧条件下进行有氧呼吸和无氧呼吸的研究

上一题 下一题 0.0难度 选择题 更新时间:2017-02-24 09:59:44

答案(点此获取答案解析)

B

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任务型阅读

Five ways to improve creativity

    Creativity is the ability to go beyond traditional rules, ideas or relationships and create something new through imagination or progressiveness. There are many ways to improve your creative mind.

    Exercise the mind. Exercising your mind is an ideal way to boost creativity. Like the body, the mind needs exercise to work the creative muscles and make them stronger. Exercise your brain by learning new subjects, getting into a debate about politics and talking to other creative and intelligent people.____

    Be passionate. One aspect of creativity is passion.____ Find your internal motivation and follow your passion to improve your creativity.

    Change your routine.____To boost your creativity, consider changing one to two elements of your daily routine. If you are working on a certain project, consider stopping one project to work on another project at regular intervals throughout the day or week.

    Read. While reading provides many intellectual benefits, reading is also beneficial for boosting creativity, exercising your brain and provide creative inspiration.____Consider reading about subjects that were previously uninteresting to you. This change in the norm might spark your creative interest.

    ____ Our packed schedules have no room for creative thinking. Take a certain amount of time every day to quiet, refresh and clear the mind while relaxing the body. This quiet time can consist of a yoga workout, meditation or simply sitting still in a dark and quiet room, in a peaceful garden or on a beautiful beach.

A. Schedule quiet time.

B. It can become weak due to stresses

C. Creativity is a natural quality

D. Often, creativity is blocked due to a too familiar routine

E. These activities will encourage a flow of creativity.

F. Read as much as possible about several different subjects.

G. Typically, students will do well in subjects they are interested in