您所在的当前位置：初中生物试题 >

花的结构

> 填出花的结构图． 1______2是______3是______图1中的8发育成图2中的（3）______，9发育成（1+2）______ 5是______6是______7是______8是______9是______10是______11、是______．

问题：

发布时间：2024-09-12

填出花的结构图．

12是3是图1中的8发育成图2中的（3），9发育成（1+2）
5是6是7是8是9是10是11、是．

参考答案：

提问用户：Fv***rzG

可能感兴趣的题目：

1 王大伯几年前承包了甲、乙两片荒山，各栽100棵杨梅树，成活98%，现已挂果，经济效益初步显现，为了分析收成情况，他分别从两山上随意各采摘了4棵树上的杨梅，每棵的产量如折线统计图所示。（1）分别计算甲、乙两山样本的平均数，并估算出甲、乙两山杨梅的产量总和；（2）试通过计算说明，哪个山上的杨梅产量较稳定？
2 电阻R 1、R 2并联接在电源上，通过R 1、R 2的电流之比I 1：I 2=3：1，若把它们串联在同一电源上，R 1、R 2两端的电压之比U 1：U 2=______．
3 图（一）为一梯形ABCD，其中∠C=∠D=90°，且AD=6，BC=18，CD=12，若将AD迭合在BC上，出现折线MN，如图（二）所示，则MN的长度为 [ ] A、10 B、12 C、15 D、21
4 在探究斜面机械效率的实验中，小明提出了“斜面的机械效率与斜面的倾斜程度有关”的猜想．（l）要测量斜面的机械效率，除了长木板和木块（如图所示）外，还需要的主要测量工具是刻度尺和______．（2）在实验过程中，应沿斜面向上拉动木块，使其做______运动．（3）要验证以上猜想，需要控制不变的因素有：______．（4）斜面在我们生活中的应用有______（只写出一条即可）．
5 用所给单词的适当形式完成句子。 1.He learned it _____ (he). 2.Lesson 3 is not so_____ (playful) as Lesson 5. 3.You should send for the doctor as _____(faster) as possible. 4.The more you learn, the _____(great) knowledge you will get. 5.How heavily it rained yesterday! But today it is even_____ (heavy).
6 如图所示，位于教学楼西北方的是（　　） A．图书馆 B．科技馆 C．实验楼 D．游泳池
7 先化简，再求值： 1 4 x+( 1 2 x-4y-6)-3(-2y+x)，其中x=-4，y=1．
8 Ann’s grandpa was very rich and he had some shops. The old man began to learn drawing(绘画) when he was sixty, and he loved it very much. For twelve years he drew（画画）a lot and there were many pictures in his workroom. He was pleased with them and kept them well. One day, the old man was ill. He had to stay in hospital. Before he died, he said to Ann, “I want to give my pictures to a school as presents. Then the students can remember me forever. But I don’t know which school I’m going to give them to. Can you help me? ” “Well,” said the little girl, “you’d better give them to a blind（盲的，瞎的） school. ” 根据短文内容，选择正确答案。（5分）小题1: Ann’s grandpa was ____________. A．a driver B．a teacher C．a blind man D．a rich man 小题2:The old man tried his best to be ____________. A．an artist B．a farmer C．a doctor D．a teacher 小题3:The old man loved ____________ very much when he was sixty. A．writing B．his shops C．money D．drawing 小题4: When the old man was in hospital, he was ____________ years old. A．60 B．70 C．72 D．78 小题5: Ann thought her grandpa’s pictures were ____________. A．nice B．beautiful C．good D．bad
9 一元二次方程x 2-4x+k=0的一个根是 2+ 3 ，则另一根是______，k等于______．
10 下列不属于氏族社会特征的是 ①财产公有 ②共同消费 ③男女平等④生产力水平低下 ⑤设有军队、监狱、城墙等机构和设施 [ ] A．①③ B．③⑤ C．①②④ D．①②③