问题 问答题 简答题

含水目的层一般应具有哪些特点?

答案

参考答案:

作为含水目的层一般具有如下几个特点:

(1)具有一定的储水空间;

(2)含水层的透水性能好;

(3)有充足的补给来源;

(4)不影响其它含水层的开采及破坏生态平衡;

(5)水质要满足用水要求或经过处理后满足用水要求。

完形填空
Mental health is about the way you think and feel and your ability to deal with ups and downs. Even though you are mentally healthy, it doesn’t           that you don’t have a mental health problem.
Mental health is everyone’s business. We all have times when we feel down or          . Most of the time those feelings pass,           sometimes they develop into a more serious problem. It seems that our mental health doesn’t always stay the same. It can change as the environment changes and as you move           different stages(阶段) of your life.
Here are four practical           to look after your mental health. Making simple changes to how you live doesn’t cost much or take up lots of time. Anyone can           them.
●Talk about your feelings. It can help you stay in good mental health. It isn’t a sign of           , but part of your ability to do what you can to stay healthy.
●Eat well. What you eat and how you feel are           connected. A proper diet can have a good effect on your mental health.
●Keep in touch. Friends and family members can offer           advice which may help you keep active and solve practical problems.
●Take a break. It could be a weekend           new places to enjoy the nature, or even a ten-minute break from doing your homework. A few minutes can be enough to relax you.
小题1:
A.agreeB.meanC.doubtD.notice
小题2:
A.excitedB.satisfiedC.surprisedD.stressed
小题3:
A.butB.andC.soD.as
小题4:
A.awayB.insideC.throughD.against
小题5:
A.answersB.repliesC.waysD.chances
小题6:
A.followB.findC.adviseD.count
小题7:
A.weaknessB.lazinessC.happinessD.richness
小题8:
A.easilyB.closelyC.equallyD.hardly
小题9:
A.difficultB.terribleC.strangeD.various
小题10:
A.protectingB.exploringC.providingD.imagining
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