题目内容

【题目】与海洋、森林并称为地球三大生态体系的湿地,具有强大的生态净化作用,被喻为“地球之肾”。湖泊、沼泽、河口三角洲、沿海滩涂等都属于湿地范畴。湿地的保护与持续利用已成为当今国际社会关注的热点。下列关于湿地的说法,正确的是(  )

①湿地具有重要的经济功能和生态服务功能 ②为了增加当地种植业收入,应将天然湿地围垦造田 ③在湿地生态环境中,水生植物、鱼类及软体动物、鸟类等形成食物链 ④湿地的减少对当地的气候、蓄洪防洪有影响,但不会对污染物降解产生影响

A. ①② B. ①③ C. ②④ D. ③④

【答案】B

【解析】湿地具有重要的经济功能和生态服务功能,①对。将天然湿地围垦造田,会导致生态功能降低,②错。在湿地生态环境中,水生植物、鱼类及软体动物、鸟类等形成食物链,③对。湿地的减少对当地的气候、蓄洪防洪有影响,会对污染物降解产生影响,④错。故选B。

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【题目】B

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

How to prepare for exam?

Here are some tips you can read with your child.

The first step in preparing for examination is to set a fixed time each day to study and a schedule to say when to start the revision and for which subject. The plan should include how many chapters to revise and how many worksheets to work on. 1 . Parents who do not know the examination time schedule can search 'exam timetable' to see the official examination schedule.

2 .

The second thing is to decide on the place to study. Some need total silence in a library before they can concentrate while others like to have some background music like in the cafeteria. 3 . So there is no need to tell your child to change the study place if he is producing the desired results.

4 . For lessons, pupils must participate in lessons and discussions actively. For exercise, work on the simple ones in the textbook. For theory, pupils can use the mind map method to summarize the facts.

At last, study smart. Focus on chapters that are the core of the subject or difficult chapters. 5 .

A. Next the most effective way to revise is to use an active approach.

B. Making good preparations counts.

C. Mind map can help you a lot in your revision work.

D. Your child has to be self-disciplined to follow the plan.

E. It is not necessary to simply read from first to last page.

F. The best time to start revision is one or two months before the examination.

G. Both are alright as long as your child is comfortable with it.

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