如图是光合作用的实验中的部分装置．实验时先将植物放在暗室中24_爱下问搜题

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问题选择题

如图是光合作用的实验中的部分装置．实验时先将植物放在暗室中24小时，再用一长条铝箔纸包住其中一叶片的部分（右图），放置在阳光下4小时后，取下此叶片用酒精隔水加热，去除叶绿素，清水漂洗后在叶片上滴加数滴碘液，叶片颜色变化正确的是（　　）

A．

B．

C．

D．

答案

实验时先将植物放在暗室中24小时，叶片不能进行光合作用，只进行呼吸作用，目的是把叶片的淀粉运走耗尽，叶片脱去叶绿素后呈现黄色，遮光部分没有进行光合作用，不产生淀粉，所以呈现黄色．未遮光部分，进行了光合作用，有淀粉产生，滴加碘液变成了深蓝色．

故选：D

完形填空

Have you ever heard of the saying, “If you want a friend, be      !” What does it      ? There are many different things that you can do to        friends. You may find out what they are if you       someone make friends.
Here is     one new teacher made friends with the       in her class on the first day of the school. When the bell       , the teacher smiled at all the students. Then she said, “Good morning. How nice it is to have all of you    my class this year! I want to       each of you very much.. I’m sure we will enjoy working together.”
The teacher smiled, used a pleasant       and acted        a friendly way. She told the students her    and wrote it on the blackboard. Then she told them something she liked to      and hoped to do with them during the year. The students knew that she liked many of the same things they liked. Everyone felt that she        what she said. Each of them wanted to know her        and be her friend. Then she let the students tell something about        . So they felt that the teacher knew them. Could you make friends as the teacher      ?
How do you know and like your classmates? One         is to find out more about them. During the       you can talk to them. You may ask them their names and the names of the schools they went to last year. They want to know about you, too. You may tell them about your interests or your holiday experiences. It is often easy to be friends with people who have     interests and play the same games. As you talk, the others may be thinking, “I like to do. It should be fun to be friends with you.” Remember! Just talking together in a friendly way is one good way to make friends.

B．their parents

C．the teacher

默写题

古诗词名句默写。（8分）

小题1: ，不亦君子乎？（《论语十则》）

小题2:安得广厦千万间，_______ ____________。 (杜甫《茅屋为秋风所破歌》）

小题3:蒹葭苍苍，。所谓伊人，在水一方。(《诗经》）

小题4:苔痕上阶绿,________________。(刘禹锡《陋室铭》）

小题5:故天将降大任于是人也，必先，劳其筋骨，饿其体肤。(《孟子二章》)

小题6:范仲淹在《渔家傲》中用“长烟落日孤城闭”描写了边塞的悲凉，而王维《使至塞上》中以“ ,长河落日圆”突出了边塞的壮美。

小题7:古代许多杰出人物都留下了千古传诵的诗章：辛弃疾的“马作的卢飞快，

　　”使人感受到了战斗的激烈，苏轼的“ ，西北望，射天狼”激励着人们立志报效国家。