问题 实验题

认真观察下列图表,并回答问题:(8分)

(1)你知道蛇和海马分别属于哪类动物?(填字母)蛇属于    ;海马属于     

(2)你能否将上述动物按进化顺序由低等到高等、由简单到复杂正确排序:                    

(3)上述几种动物类群都属于脊椎动物,其分类的依据是体内都有          

(4)D类能够飞行,与其生活习性相适应的身体形态特征:身体呈    、 前肢特化成  ,长骨     、体表被覆    

答案

(1)   C    A    (2) A→B→C→D→E         (3) 脊柱        

(4)流线型 翼   中空  羽毛。

题目分析:结合分析右边的分类索引来解答.脊椎动物按照体温是否恒定分为变温动物和恒温动物,变温动物有A鱼类、B两栖类、C、爬行类,恒温动物包括D鸟类和E哺乳类,

(1)蛇属于C爬行动物,变温动物,用肺呼吸,产有硬,壳的卵来繁殖后代海马属于A鱼类,变温动物,生活在水中,用鳃呼吸,产没有壳的卵来繁殖后代,用鳍游泳。

(2)按进化顺序由低等到高等、由简单到复杂正确排序:A→B→C→D→E。

(3)上述几种动物类群都属于脊椎动物,其分类的依据是体内都有脊椎骨组成的脊柱。

(4)D类(鸟类)能够飞行,与其生活习性相适应的身体形态特征:身体流线型、前肢特化为翼、体表被覆羽毛。

点评:此题为基础知识题,解答此类题目的关键是熟记动物的特有特征,并掌握动物的分类知识,能灵活地对动物进行分类。

单项选择题
阅读理解

阅读理解

     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。

        1      It has been used as a product full of nutrition. Our bodies need it for their development and

also to help them to recover after a disease.

The microelement(微量元素) content of honey is similar to that of our blood.    2   In honey, the

percentage of vitamins and minerals differs according to the kind of nectar(花蜜) used by the bees and

the quality of the soil where the plants grow.     3     The latter is the most valuable in its healing(治疗)

effects.

       4    Put one teaspoonful of honey in a glass of milk before going to bed and you will certainly have

sweet dreams that night.

If you feel sick because you have eaten too much one day, or you have a stomachache, then their solution

is a glass of water with honey and lemon. Moreover,a sore throat is not a problem any more if you have a cup of tea with honey.

Singers use honey when they have problems with their voices or before a concert when they really feel

exhausted.     5   they use them for their hair,nails and bodies.

A. Honey is mostly used as a natural sedative(镇静剂)when you have problems with your sleep.

B. Honey is helpful for losing weight.

C. That is why it is so well assimilated (吸收)by our bodies.

D. For women, beauty products made of honey can be very helpful.

E. Honey, a wonderful gift of nature to mankind, has been well known since ancient times.

F. What determines the quality of honey is the kind of bees and flowers.

G. There are kinds of honey,including mono flower honey,meaning the honey is made of only one type of flower,and polo flower honey,which is made in mountainous areas.