问题 填空题

如图是蝗虫外部形态示意图,请据图作答:

(1)蝗虫身体是由①______、②______和③腹部构成.

(2)体表有______防止体内水分的蒸发.

(3)蝗虫的发育要经过卵、若虫和成虫三个时期,这种发育过程称为______.

(4)蝗虫和蜈蚣的形态差异很大,但在分类上它们同属于无脊椎动物中的______动物.

答案

(1)蝗虫的身体分为头、胸、腹三部分,图中①为头部生有触角和口器以及单复眼;②为胸部是蝗虫的运动中心,③为蝗虫的腹部是蝗虫呼吸、生殖中心.

(2)陆地气候相对干燥,与此相适应,蝗虫的体表具有外骨骼,有保护和支持内部柔软器官、防止体内水分蒸发的作用.

(3)蝗虫的发育过程包括:受精卵、若虫、成虫三个时期,若虫与成虫在形态结构与生活习性上与成虫区别不大,为不完全变态发育.

(4)蝗虫和蜈蚣的形态差异很大,但它们都具有身体由很多体节构成,并且分部,体表有外骨骼等特征,都属于节肢动物.

故答案为:(1)头部;胸部

(2)外骨骼

(3)不完全变态发育

(4)节肢

阅读理解

Some people bring out the best in you in a way that you might never have fully realized on your own.My mom was one of those people.

My father died when I was nine months old,making my mom a single mother at the age of eighteen.While I was growing up,we lived a very hard life.We had little money,but my mom gave me a lot of love.Each night,she sat me on her lap and spoke the words that would change my life,“Kemmons,you are certain to be a great man and you can do anything in life if you work hard enough to get it.”

At fourteen,I was hit by a car and the doctors said I would never walk again. Every day,my mother spoke to me in her gentle,loving voice,telling me that no matter what those doctors said. I could walk again if I wanted it badly enough.She drove that message so deep into my heart that I finally believed her.A year later,I returned to school--walking on my own.

When the Great Depression(大萧条)hit,my mom lost her job.Then I left school to support the both of us.At that moment,I was determined never to be poor again.

Over the years, I experienced various levels of business Success.But the real turning point occurred on a vocation I took with my wife and five kids in 1951.I was dissatisfied with the second-class hotels available for families and was angry that they charged an extra$2 for each child.That was too expensive for the average American family.I told my wife that I was going to open a motel(汽车旅馆)for families that would never charge extra for children.There were plenty of doubters at that time.

Not surprisingly,mom was one of my strongest supporters.She worked behind the desk and even designed the room style.As in any business,we experienced a lot of challenges.But with my mother’s words deeply rooted in my soul,I never doubted we could succeed.Fifteen years later,we had the largest hotel system in the world—Holiday Inn. In 1979,my company had 1759 inns in more than fifty countries with an income of $ 1 billion a year.

You may not have started out life in the best situations.But if you can find a task in life worth working for and believe in yourself,nothing can stop you.

小题1:What Kemmons' mom often told him during his childhood was         

A.caring

B.moving

C.encouraging

D.interesting小题2:What caused Kemmons to start a motel by himself?

A.His terrible experience in the hotel.

B.His previous business success of various levels.

C.His mom’s support.

D.His wife’s suggestion.小题3:.Which of the following best describes Kemmoms’ mother?   、

A.Modest,helpful,and hard-working.

B.Loving,supportive,and strong-willed.

C.Careful,helpful,and beautiful.

D.Strict,sensitive and supportive.小题4:Which of the following led to Kemmons’ success according to the passage?

A.Self-confidence,hard work,clear goals and a poor family.

B.Mom's encouragement,clear goals,self-confidence,and hard work.

C.Clear goals,mom’s encouragement,a poor family,and higher education.

D.Mom's encouragement,a poor family,higher education and opportunities.

问答题 简答题