问题 选择题

下列有关真菌特征的叙述,不正确的是

A.通过分裂生殖繁殖后代

B.细胞内有真正的细胞核

C.以现有的有机物生活

D.个体有大也有小

答案

答案:A

题目分析:A、真菌进行孢子生殖,孢子落到适宜的环境就会萌发生出菌丝,形成新个体.大多数真菌用孢子繁殖后代,细菌进行分裂生殖.故符合题意;B、真菌的基本结构有细胞壁、细胞膜、细胞质、细胞核,没有叶绿体,因此真菌有真正的细胞核,故不符合题意;C、真菌的细胞不含叶绿体,是典型异养生物。它们从动物、植物的活体、死体和它们的排泄物,以及断枝、落叶和土壤腐殖质中、来吸收和分解其中的有机物,作为自己的营养,真菌的异养方式有寄生和腐生,因此真菌以现有的有机物生活,故不符合题意;D、真菌中酵母菌是单细胞的,霉菌和大型真菌都是多细胞的,因此真菌个体有大也有小,故不符合题意。故选A.

阅读理解

An eight-year-old child heard her parents talking about her little brother. All she knew was that he was very sick and they had no money. Only a very expensive operation could save him now and there was no one to lend them the money.

When she heard her daddy say to her tearful mother,“Only a miracle (奇迹)can save him now,”the little girl went to her bedroom and pulled her money from its hiding place and counted it carefully.

She hurried to a drugstore(药店)with the money in her hand. “And what do you want?” asked the salesman. “It’s for my little brother,” the girl answered. “He’s really,really sick and I want to buy a miracle.” “Pardon?” said the salesman. “My brother Andrew has something bad growing in-side his head and my daddy says only a miracle can save him. So how much does a miracle cost?” “We don’t sell a miracle here,child. I’m sorry,”the salesman said with a smile.

“Listen,if it isn’t enough,I can try and get some more. Just tell me how much it costs.”

A well-dressed man heard it and asked,“What kind of a miracle does your brother need?”

“I don’t know,”she answered with her eyes full of tears(眼泪). “He’s really sick and mum says he needs an operation. But my daddy can’t pay for it,so I have brought all my money.” “How much do you have?” asked the man. “$ 1.11,but I can try and get some more,” she answered.

“Well,what luck,”smiled the man. “$ 1.11,the price of a miracle for little brothers.”

He took up the girl’s hand and said, “Take me to where you live. I want to see your brother and meet your parents. Let’s see if I have the kind of miracle you need.”

That well-dressed man was Dr Carlton Armstrong,a famous doctor. The operation was successful and it wasn’t long before Andrew was home again.

How much did the miracle cost?

小题1:In the eye of the little girl,a miracle might be ______________.

A.something interesting

B.something beautiful

C.some wonderful medicine

D.some good food小题2:What made the miracle happen?

A.The girl’s love for her brother.

B.The girl’s money.

C.The medicine from the drugstore.

D.Nobody can tell.小题3:From the passage we can infer (推断)that _______________.

A.the doctor didn’t ask for any pay

B.a miracle is sure to happen if you keep on

C.the little girl is lovely but not so generous

D.Andrew was in fact not so sick as they had thought

填空题