题目

—Jane is really a gossip. She shouldn’t have told her classmates about our plan for the coming vacation! —I think she didn’t mean to; perhaps it just . A.fell out                    B.slipped out               C.gave out                  D.ran out 答案：B如图表示家蚕发育过程的四个阶段，下列有关说法错误的是（ ）A. 属于不完全变态发育 B. 发育过程是②④③①C. ②是家蚕的受精卵 D. 家蚕属于体内受精