题目

阅读理解Will it matter if you don't take your breakfast? Recently a test was given in the United States. Those tested included people of different ages, from 12 to 83. During the experiment, these people were given all kinds of breakfast, and sometimes they got no breakfast at all. Special tests were set up to see how well their bodies worked when they had eaten a certain kind of breakfast. The results show that if a person eats a proper breakfast, he or she will work with better effort than if he or she has no breakfast. This fact appears to be especially true if a person works with his b家蚕的受精和发育方式是（ ）A.体内受精，不完全变态发育 B.体外受精，不完全变态发育C.体内受精，完全变态发育 D.体外受精，完全变态发育