问题 实验题

下图是两种昆虫的发育过程。请据图回答:

(1)甲图所示的个体发育过程属于______________,属于这种发育类型的昆虫还有___________________________。(2)C和D的名称是______________。在C→D的过程中有蜕皮现象,原因是_____________________。(3)d表示的发育时期叫做______________。如果乙图所示的昆虫是一种农业害虫,在整个发育过程中,对农作物危害最严重的时期是______________(填图中字母)。

答案

(1)不完全变态发育, 蟋蟀、螳螂、蝉。

(2)若虫。外骨骼不能随身体的生长而生长。

(3)蛹    c

题目分析:(1)甲图中,A是成虫,B是受精卵,C、D是幼虫,这种昆虫的发育经过受精卵、幼虫和成虫三个阶段,而且幼虫和成虫差别不明显,这样的发育过程叫不完全变态发育,属于这种发育类型的昆虫还有蟋蟀、螳螂、蜻蜓、蝉等。

(2)C和D的名称是幼虫,在C→D的过程中有蜕皮现象,是因为昆虫的外骨骼不能随幼虫身体的生长而长大。

(3)乙图中,a是成虫,b是受精卵,c是幼虫,d是蛹,这种昆虫的发育过程是:受精卵、幼虫、蛹、成虫四个阶段,而且幼虫和成虫差别明显,这样的发育过程叫完全变态发育,在整个发育过程中,对农作物危害最严重的时期是c幼虫时期。

阅读理解

Reading comprehension.

    One of the most famous movie prizes in the world is the Oscar. Every year in the United States, the

Academy of Motion Picture Arts and Science (电影艺术科学院) gives Oscars to people who have done

well in the movies. There is an Oscar for the best movie of the year, another for the best actor, and Oscars

for doing many other things well in movies.

    Oscars are very important because people want to see movies that have won them. They also want to

see actors who have won Oscars. This means movies that have won Oscars make a lot of money. The

Academy first gave prizes to movies in 1927, but they were not called Oscars then. That happened four

years later. Most people think that Oscar was someone famous in the movies, but he wasn't. He was

someone that a woman called Margaret Herrick knew. She worked for the Academy and one day she saw

the prize on a table. She said, "He looked like my friend Oscar." From that time on the prizes were called

the Oscars.

Answer the following questions according to the passage.

1. What is the Oscar?

                                                                                                                             

2. Who can win the Oscars?

                                                                                                                             

3. Where does the Academy of Motion Picture Arts and Science give Oscars to them? 

                                                                                                                              

4. When did the Oscars get their names?

                                                                                                                              

5. Why are Oscars important?

                                                                                                                               

选择题