题干

下列关于物质跨膜运输实例的叙述中,不正确的是(  )

A:细胞吸水和失水是水分子顺相对含量梯度跨膜运输的过程

B:水分子跨膜运输总的方向是由低浓度溶液向高浓度溶液

C:无机盐离子可以逆相对含量梯度进行跨膜运输

D:生物膜是选择透过性膜,小分子物质都能通过,而大分子物质则不能通过

上一题 下一题 0.0难度 选择题 更新时间:2020-03-30 06:40:16

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D

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完形填空

    Children find meanings in their old family tales.

    When Stephen Guyer's three children were growing up, he told them stories about how his grandfather, a banker, 1 all in the 1930s, but did not lose sight of what he valued most. In one of the darkest times 2his strong-minded grandfather was nearly 3  he loaded his family into the car and 4them to see family members in Canada with a5,“there are more important things in life than money. ”

    The 6took on a new meaning recently when Mr. Guyer downsized to a 7house from a more expensive and comfortable one. He was 8that his children, a daughter, 15, and twins, 22, would be upset. To his surprise, they weren't.9, their reaction echoed (共鸣) their great-grandfather's. What they10was how warm the people were in the house and how11of their heart was accessible(可接近的).

    Many parents are finding family stories have surprising power to help children 12hard times. Storytelling experts say the phenomenon reflects a growing 13in telling tales, evidenced by a rise in a storytelling events and festivals.

    A university 14of 65 families with children aged from 14 to 16 found kids' ability to15parents' stories was linked to a lower rate of anger and anxiety.

    The 16is telling the stories in a way children can17. We're not talking here about the kind of story that 18  “When I was a kid, I walked to school every day uphill both ways, barefoot in the snow. ” Instead, we should choose a story suited to the child's19, and make eye contact (接触) to create “a personal experience”. We don't have to tell children20they should take from the story and what the moral(教育意义) is . ”