问题 解答题

桃花的花瓣凋谢后,能继续发育的是子房.______.

答案

当一朵花开发之后必须完成传粉与受精,才能结出果实和种子,传粉是指雄蕊的花粉落到雌蕊的柱头上的过程.受精是指精子和卵细胞结合成受精卵的过程.一般当花完成传粉与受精后只有子房进一步发育为果实,雄蕊和雌蕊、花瓣等都凋落了.果实与种子的形成图如下:

故答案为:√

阅读理解

“It’s 8:15 on a Sunday morning,” said the officer, Tidwell, “and this sort of thing seems an unlikely adventure(冒险) at such a time. Would you mind explaining?”

The man was astonished(吃惊的) at the voice from behind. He turned about and said, “I know what you’re thinking, officer, but it isn’t true. It’s a very funny mistake.”

“I think you’ve just left this house in a manner rather than the usual one. That may be quite all right, but I’d like to make sure.” Tidwell took out his notebook and a pen. “Name, address and occupation and then, please tell me your story.”

“Charlie Crane, lorry(卡车) driver, from Nottingham, 51 Brecon Street. My story?”

“Yes, What were you doing like a fly on that wall, Mr. Crane?”

“Well, I had a breakdown yesterday and had to stay the night here. The landlady’s name is Mrs. Fern. She gave me breakfast at seven, and I was out of here in the right way and down at the lorry park by half past seven. It was only when I felt around for a cigarette that I realized I’d left $80 under the pillow(枕头) here. It’s a habit I’ve got into. I even do it almost every day.”

“I see. Why didn’t you miss it when you meant to pay Mrs.? What’s her name?”

“I paid her last night. You’ve got to pay when you take the room, see? So I came rushing back, but it’s Sunday, and she’d gone back to bed. I rang the bell and banged on the front door for ten minutes before I came round here. Up I went this pipe(管子) and the money was still there. You know the rest, and I hope you believe it because….”

“Mr. Crane, whatever are you doing here? I thought you’d gone an hour ago.” It was Mrs. Fern.

小题1:What did Tidwell see?

A.He saw a man going to a park in a hurry

B.He saw a man bringing a pipe out, through a window.

C.He saw a man leaving a house

D.He saw a man trying to go up a pipe小题2:When Mr. Crane was at home, he         .

A.kept his cigarettes under his pillow at night

B.always carried his money about him at night

C.tried to give up the habit of smoking

D.put his money under his pillow at night小题3:What do you think happened in the end?

A.Mrs. Fern found the $80 in the house

B.Tidwell took Mr. Crane to the police station

C.Mrs. Fern said sorry to Mr. Crane

D.Mr. Crane was let go

单项选择题