问题 解答题

如图是青蛙的生殖发育过程图,请根据所学知识,回答下列问题.

(1)②是青蛙的______.

(2)按青蛙的发育过程用序号排序;______.

(3)青蛙的生殖过程中幼体和成体在形态和结构方面有显著差异,称为______发育.(选填“变态”或“直接”)

(4)蛙鸣叫的意义是______(选填“求偶”或“觅食”).

(5)青蛙有“庄稼卫士”之称.然而有的人竟把它做成一样菜“XXX田鸡”摆上了酒宴,这种做法是______(选填“正确”或“不正确”)的,我们应该______.

答案

青蛙的发育过程为:雄蛙先鸣叫吸引雌蛙,雌蛙来后雌雄蛙抱对,促进两性生殖细胞排出,两性生殖细胞在水中结合形成受精卵,许多受精卵在一起形成卵块,受精卵孵化出小蝌蚪,小蝌蚪先长后肢,再长前肢,最后尾巴逐渐消失,变成小幼蛙,幼蛙逐渐长成成蛙.即受精卵→蝌蚪→幼蛙→成蛙,青蛙的幼体和成体在系统结构和生活习性上差异很大,这样的发育属于变态发育.

所以(1)②是青蛙的幼体-蝌蚪.

(2)按青蛙的发育过程用序号排序:①→②→③→④.

(3)两栖动物的幼体和成体在形态结构和生活习性上差异很大,这样的发育叫变态发育.

(4)会叫的青蛙为雄蛙,雄蛙鸣叫的意义是吸引雌蛙的求偶行为.

(5)青蛙能捕食大量的农业害虫,是人类的好朋友.我们要保护青蛙,首先要保护他们的生活环境,并对捕食青蛙的现象积极的制止,并对当事人进行思想教育,情节严重的追究其法律责任.

故答案为:(1)幼体-蝌蚪;

(2)①→②→③→④;

(3)变态;

(4)求偶.

(5)不正确;我们应极力反对这种做法.并对当事人进行教育,好好保护青蛙.

问答题 案例分析题

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      下面文章有5处(第61~65题)需要添加小标题.请从以下选项(A、B、C、D、E和F)中选
出符合各段意思的小标题,并在答题纸上将相应选项的标号涂黑.选项中有一项是多余选项.
A. There are few statues in the Middle East.
B. Art is a good means for people to know about religions.
C. Artists express their feelings and opinions in their works.
D. People know more about our culture through learning art history.
E. Art is more objective than history itself.
F. Art history provides information of different places and people.

1.
      A study of art history might be a good way to learn more about a culture than is possible to learn
in general history classes. Most typical history courses concentrate on politics, economics and war.
But art history focuses on much more than this because art reflects not only the political values of a
people, but also religious beliefs, emotions, and psychology.
2.
      In addition, information about the daily activities of our ancestors - or of people very different from
our own - can be provided by art. In short, art expresses the essential qualities of a time and a place,
and a study of it clearly offers us a deeper understanding than can be found in most history books.
3.
     In history books, objective information about the political life of a country is presented; that is, facts
about politics are given, but opinions are not expressed. Art, on the other hand, is subjective: it reflects
emotions and opinions. The great Spanish painter Francisco Goya was perhaps the first truly "political"
artist. In his well-known painting The Third of May 1808, he criticized the Spanish government for its
misuse of power over people. Over a hundred years later, symbolic images were used in Pablo
Picasso's Guernica to express the horror of war. Meanwhile, on another continent, the powerful
paintings of Diego Rivera, Jose Clemente Orozco, and David Alfaro Siqueiros - as well as the works
of Alfredo Ramos Martins - depicted these Mexican artists' deep anger and sadness about social
problems.
4.
     In the same way, art can reflect a culture's religious beliefs. For hundreds of years in Europe, religious
art was almost the only type of art that existed. Churches and other religious buildings were filled with
paintings that depicted people and stories from the Bible. Although most people couldn't read, they c
ould still understand biblical stories in the pictures on church walls.
5.
     By contrast, one of the main characteristics of art in the Middle East was (and still is) its absence of
human and animal images. This reflects the Islamic belief that statues are unholy. That's why no figures
can be found in or around places of interest in these regions.