问题 选择题

茶毛虫、黑毒蛾、白毒蛾都是危害广东茶园的主要害虫,它们的发育过程经历了哪些阶段?(  )

A.受精卵→幼虫→成虫

B.受精卵→幼虫→蛹→成虫

C.受精卵→蛹→成虫

D.受精卵→蛹→幼虫→成虫

答案

完全变态发育是昆虫变态的两种类型之一.昆虫在个体发育中,经过卵、幼虫、蛹和成虫等4个时期地叫完全变态发育.完全变态发育的幼虫与成虫在形态构造和生活习性上明显不同,差异很大,如家蚕、蝴蝶等.茶毛虫、黑毒蛾、白毒蛾发育过程为:受精卵→幼虫→蛹→成虫,因此选项B正确.

故选B.

阅读理解

Some parents are worrying that their children wouldn’t like meals. In fact, most children are usually ready to eat almost anything that is offered to them. A child often likes food unless it is badly cooked. Never ask a child whether he likes or dislikes a food, never discuss likes and dislikes in front of him or allow anybody else to do so . If the father says that he hates fat meat or the mother refuses some vegetables in the child’s hearing, he may copy this action. Parents should agree to the fact that he likes everything and he probably will . At meal times, it is a good idea to give a child a small part at one time rather than give him as much as he may eat all together. Do not talk too much to the child during meal times, but let him get on with his food. And do not allow him to leave the table at once after a meal , or he will soon learn to eat his food hurriedly so he can hurry back to the toys in his room . Never coax(哄骗)or make a child eat, or he will think he eats for you. Don’t you think it is the same with study ?

小题1:A child will probably eat ________ if it is not badly cooked.

A.only a little of the food

B.almost all of the food

C.some of the food

D.all of the food小题2:        can make a child like eating more.

A.Offering as much as possible

B.The way parents eat

C.Playing with toys

D.The way a meal is well cooked and served小题3:Which of the following is a good action before a child during meal times?

A.To discuss the food a parent dislikes.

B.To talk a lot to the child.

C.To ask a child what food he likes or dislikes.

D.Never discuss likes or dislikes of food.小题4:If a child is allowed to leave the table at once after a meal ,he will _______ .

A.eat more

B.stop eating

C.learn to eat hurriedly

D.dislike the meal小题5:From the passage, parents should learn that it’s better ________________.

A.to coax the child to do his homework

B.to make the child study

C.not to make the child work on his lessons

D.not to help the child with his study

问答题 简答题