问题 不定项选择

根据《环境影响评价技术导则-地面水环境》,下列关于河流的简化要求,说法正确的有()。

A.大、中河流预测河段的断面形状沿程变化较大时,可以分段考虑

B.小河可以简化为矩形平直河流

C.江心洲位于充分混合段,评价等级为一级时,可以按无江心洲对待

D.大、中河流断面上水深变化很大且评价等级为一级时,可以视为非矩形河流

答案

参考答案:A, B, D

解析:C项错误,评价等级为三级时,江心洲、浅滩等均可按无江心洲、浅滩的情况对待;评价等级为二级时,江心洲位于充分混合段,可以按无江心洲对待;评价等级为一级且江心洲较大时,可以分段进行环境影响预测,江心洲较小时可不考虑。江心洲位于混合过程段,可分段进行环境影响预测。

解答题
阅读理解

阅读理解。

     Almost every child is scared of something, from monsters in the cupboard to dogs in the park. But the

fact that such fears are common and normal doesn't mean they can be taken lightly. Kids experience fears

and phobias (恐惧症) much more strongly than adults. And the influence of the fear can be physical as well

as psychological (心理的). It can build up so they almost seem scared of everything-a kind of childhood

anxiety. Dr. Creswell says: "Your child may always seem to expect the worst to happen and lack confidence

in his or her ability to deal with any challenge." So don't make the same old mistake of treating them as if

they're silly for being a "scaredy cat". Handling the fears is essential.

      Children can be born nervous and, if you have such a baby, you'll tend to prevent them from getting

worried. So if they fear dogs, you'll keep them away from dogs, but in fact that can just confirm to the child

that dogs are scary. What is worse, keeping your child away from what they fear can turn that feeling into

a phobia. Instead, you should encourage them to get in touch with the thing they fear, in a safe and supportive

environment. Dr. Andy Field, a researcher of childhood fears, says: "You shouldn't force, for example, a dog

anxious child to go up to a dog. But you can approach it yourself, show them there is nothing to be afraid of,

stroke (抚摸) it, and talk about the dog being friendly. Once your child dares to stroke a dog-one that's good

with children, of course-then you should encourage them to carry on until they feel calmer, and reward them

for 'being brave'."

1. Children's fears are usually taken lightly because ______.

A. they will not develop into phobias

B. their influence is psychological

C. they exist widely in the world

D. they will disappear gradually

2. If we fail to help children to overcome fears, they will ______.

A. make the same old mistake

B. overcome them by themselves

C. experience the worst of things

D. grow up lacking self confidence

3. According to Dr. Andy Field, if a child is afraid of a cat, parents should ______.

A. tell the child not to be afraid of it

B. show the child how to approach it

C. keep the child away from it

D. ask the child to stroke it