下图为菜豆种子和玉米种子结构示意图,识图作答 (1)玉米种子中构成胚的结构是_

题型:解答题

问题:

下图为菜豆种子和玉米种子结构示意图,识图作答

(1)玉米种子中构成胚的结构是______(用图中数码表示).

(2)菜豆种子的营养物质贮存在[______]______中.玉米种子的营养物质贮存在[______]______中.

(3)[4]和[8]都表示种子的______,它们的不同之处在于______.

考点:种子萌发的条件和过程
题型:解答题

There was a boy who was sent by his parents to a boarding school(寄宿学校). Before he was sent away, the boy was the     41     student in his class. He was at the top in every exam.
But the boy changed after     42    home and studying in the boarding school. His grades started to     43   . He hated being in a group. He was lonely all the time. And there were especially dark times when he felt like committing suicide(自杀). All of this was because he felt no one loved him.
His parents started to     44     the boy. But they even did not know what was wrong with him. So his father decided to go to the school and talk with him.
They sat by the lake near the school. The father started asking him some casual questions about his lessons, teachers and     45   . After some time his father said, "Do you know, son, why I'm here today?"
"To     46    my grades," the boy replied back.
"No, no," his father said. "I'm here to tell you that you're the most     47    person for me. I want to see you      48  . I don't care about grades. I care about you. I care about your happiness. You're my life."
These words caused the boy's eyes to be filled with tears. He hugged(拥抱) his father. They didn't say     49    to each other for a long time.
Now the boy had everything he wanted. He knew there was someone on the earth who cared for him deeply. And today this young man is in university at the top of his class and no one has ever seen him     50   .
小题1:
A.laziestB.cleverestC.calmestD.worst
小题2:
A.comingB.returningC.leavingD.going
小题3:
A.dropB.increaseC.riseD.turn down
小题4:
A.look forB.learn fromC.worry aboutD.shout at
小题5:
A.friendsB.familyC.studyD.grades
小题6:
A.findB.teachC.checkD.hear
小题7:
A.famousB.importantC.outstandingD.interesting
小题8:
A.happyB.seriousC.excellentD.honest
小题9:
A.everythingB.somethingC.nothingD.anything
小题10:
A.illB.pleasantC.pleasedD.sad
题型:解答题

维修工具应统一编号,建立()。

题型:解答题

按照所燃放()的规格和数量将大型焰火燃放划分为Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ五级。

A、礼花弹

B、组合烟花

C、架子烟花

D、舞台焰火

题型:解答题

油环的作用是()。

A、密封

B、传热

C、刮油

D、供油

题型:解答题

有关下颌神经的描述,下列哪项是错误的()

A.为三叉神经的最大分支

B.含有感觉及运动神经纤维

C.自卵圆孔出颅

D.在翼腭窝分为前后两股

E.前股主要为运动神经,后股主要为感觉神经

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