问题 读图填空题

下图菜豆种子和玉米种子的结构图

(1)填序号:胚芽_______胚根________胚轴______子叶_______种皮_______胚乳______果皮和种皮________   

(2)菜豆种子的胚由图中___________组成。玉米种子的胚由图中_______组成,将来发育成菜豆和玉米的茎和叶的分别是______________,发育成根的分别是___________。

(3)名称相同但功能不同的结构是_______和_______,其功能分别是__________和____________。

(4)若将碘液滴在两种种子的剖面上,蓝色较深的是_______种子,其中_______结构最蓝。

答案

(1)④和⑦ ②和⑨ ②和⑧ ⑤和11 ③ ⑩ ⑥  

(2)①②④⑤ ⑦⑧⑨  11和④ ②和⑨   

(3)⑤  11  贮存营养  吸收转运营养物质  

(4)玉米 ⑩ 

单项选择题

"It’s no use, Mum," said Johnny. "I’m just no good at dancing."

"You’ve got to keep trying. Tonight will be (1) , dear. Try a turn with that pretty Lisette. "

Johnny (2) . Every Saturday night used to be the best of the week. He and his parents went to the (3) at the Club, where his hero, Alcide, played the accordion with the band. But lately everything had changed. Now that Johnny was older, he was (4) to dance with a girl!

(5) Johnny and his parents arrived at the Club, music had already started. Johnny got up his (6) to approach Lisette. "May I have this dance" Johnny asked. "That’s all right."said Lisette. Johnny struggled to keep up with Lisette’s (7) steps, but he was always one beat behind her. Then Johnny heard his friend Pierre say, "Look! Johnny has two left feet!" (8) burst from the crowd. Johnny (9) and ran outside, determined never to go to another dance.

The next Saturday, Alcide (10) to Johnny’s house for some potatoes. He happened to hear Johnny playing the accordion. Alcide’s eyes (11) . "Bring that accordion and play some songs tonight," Alcide said. Then he drove off, leaving Johnny staring open mouthed (12) him.

At the Club, Johnny scanned the crowd for Lisette and (13) her. The band played for a long time before Alcide said, "Dear friends, I got a (14) for you tonight. Young Johnny is going to join us!" (15) , Johnny stepped up on the platform, his eyes on the floor. He began to play, and the band (16) behind him. When the song ended, he heard cheers. Johnny kept playing until the dance was (17) . "You did a fine job tonight. Play with us again next Saturday night, " Alcide said. "Yes, sir! " said Johnny. (18) he went outside, Johnny saw Lisette and her friends near the door. Lisette stepped (19) , smiling. "You played really good tonight!" she said."Thank you," Johnny blushed. As he walked on, Pierre (20) moved out of the way for him to pass.Johnny patted his accordion. Come to think of it, in his whole life, he had never once seen Alcide out on the dance floor.

9().

A.broke away

B.went out

C.broke up

D.turned out

单项选择题