问题 实验题

下面图甲表示某生长的大棚蔬菜,图乙为该植物叶肉细胞结构示意图,图丙为二氧化碳浓度和光照强度对大棚该蔬菜光合作用强度的影响曲线。请据图回答:

(1)植物正常生理活动需要的水分和无机盐,是通过甲图中【D】________运输到植物所需要的部位。

(2)甲图中A、B、C为植物叶片发生在植物体内的某些生理过程,【  】________过程在细胞内始终进行的生理活动。这一过程发生在乙图的【 5 】__________中。

(3)甲图中过程B的强弱受__________________________等环境因素的影响(请写两条)。

(4)根据对图丙分析所得结论,对大棚蔬菜采取                                  等措施可以提高产量(请写两条)。

答案

(1)导管(2)A 呼吸作用   5 线粒体   (3)光照强度、环境温度、空气湿度、空气流动等(4)增加光照;提高二氧化碳含量、增施有机肥料、合理密植、间作套种等

题目分析:(1)植物的根从土壤中吸收的水和无机盐是通过贯穿于植物体内的导管运输到植物体的所需部位的.

(2)植物体吸收空气中的氧,将体内的有机物转化成二氧化碳和水,同时释放出能量的过程叫做呼吸作用,图甲中,过程A表示植物体吸收氧气,释放二氧化碳,因此是植物体的呼吸作用,呼吸作用在细胞的线粒体内进行,是植物体始终进行的生命活动.

(3)水分以气体状态从植物体内散失到植物体外的过程叫做蒸腾作用,图甲中,B表示的是水蒸气从叶片的气孔中散失到大气中,因此是植物的蒸腾作用;气孔的张开和闭合可以调节蒸腾作用,使植物体内经常保持着适量的水分,而气孔的张开和闭合又受光照强度、环境温度、空气湿度、空气流动等环境因素的影响.

(4)①a或b曲线都可以说明光照强度是影响光合作用强度的因素.由图象OA和OB都是随着光照强度的增加而上升,在一定的范围内,光合作用的强度随着光照强度的增加而增加.

②A点和B点的光合作用强度差异说明二氧化碳浓度是影响光合作用强度的因素.同一光照强度,二氧化碳浓度越大,光合作用强度越强.

③限制C点光合作用强度进一步增强的因素是二氧化碳浓度低,光照强度弱.

④分析曲线,可以得出结论:适当提高光照强度和二氧化碳浓度能促进光合作用,提高蔬菜产量.

阅读理解

第二部分阅读理解:(共两节, 满分50分)

Ⅲ. 第一节(共20小题; 每小题2分, 满分40分)阅读下列短文, 从每题后面所给的选项

(A、B、C和D)中,选出最佳选项,并在答题卷上将该项涂黑。

A

We may encounter various setbacks (挫折) in our life and these setbacks  may never repeat themselves. They appear differently in different periods of life.

Students may have problems in learning, for example, the goal and motivation of learning, the method and attitude of study, and their school performances as well. If they fail to deal with these matters properly, they may have problems in study and even develop psychological problems.

Job-hunting, career choosing, capability and unemployment are matters often leading to

psychological problems of the contemporaries (当代人). How to choose a career, how to make a plan for life and how to keep competence in position and for promotion, etc., these are all factors to bring us worries and anxieties.

Interpersonal relationship leads to one of the major psychological setbacks of the human being. The symptoms show that it is hard to get along with others, lacking necessary skills to communicate with others. These may lead to sad feelings of loneliness, bitterness, short of concerns and cares.

The old often suffer from supersession of the old by the new, stepping down from leading positions, retirement, being isolated and helpless. How to look at these rules of law in life, get used to the change, handle domestic emptiness when children grow up and the bitterness facing death of the beloved, all these have to be dealt with properly, to avoid the development of depression and disease.

Now, it comes to the key — how to handle them. 

Keeping a good mood:

Do not make your ambitions too high and never seek for perfection when doing things.

Do not expect too much from others. Otherwise, you will be disappointed if she/he fails to meet your expectation.

When angry, you’d better calm yourself so as to avoid doing something stupid.

Be tolerating and forgiving. Toleration and forgiveness can either smooth your own mood or benefit interpersonal relationship.

When you encounter setbacks you’d better leave it alone and begin to do something you like, for example, go to the theater or take exercise, etc.

You may ease yourself by telling your unhappiness to your good friends, parents, teachers or even making a telephone call to psychological hotlines.

Do something good for others. In this way, you will not only forget your worries but also find your own value and at the same time make friends with others.

To evaluate your ability and role properly, thus you will not develop unnecessary psychological pressure on yourself.

41. The writer is mainly trying to tell us _______.

A. who knows about setbacks           B. how to deal with setbacks 

C. when we have setbacks               D. what causes various setbacks

42. Setbacks may result from the following EXCEPT _______.

A. learning problems at school            B. weak competence in career

C. poor skills in communication         D. the rules of law in life

43. Guess the right meaning of the underlined word “supersession”.

A. depression                                 B. replacement

C. loneliness                                  D. emptiness

44. From the “key” given by the writer, we can infer that _______.

A. anger can be turned into useful power

B. those without ambitions are the happiest

C. psychological problems can be solved by yourself

D. doing something good for others adds to your worries

问答题 计算题