下图为一种常见的坐标曲线图。该图示能够表示的生物学含义是 [ ] A.萌发的种子

题型:选择题

问题:

下图为一种常见的坐标曲线图。该图示能够表示的生物学含义是

[ ]

A.萌发的种子中自由水含量随时间变化的情况

B.细胞代谢中反应速率随底物浓度变化的情况

C.某植物光合作用速率随光照强度变化的情况

D.人红细胞中K+吸收量随O2浓度变化的情况

考点:光合速率物质跨膜运输的方式
题型:选择题

以下程序运行后的输出结果是【 】。  main( )  { char m;   m=’’B’’+32; printf("%c\n",m);  }

题型:选择题

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中的两项为多余选项。

There was a park near my home. But I didn’t go there very often. Many people said there was nothing special. One afternoon I went into the park and found it was really small. I walked quickly because there wasn’t much to see. I walked for some time and found myself standing in front of two paths.小题1: I found that the two paths were different from each other.

The left one was wide and clean. There were lots of flowers on both sides of the path. Though the flowers weren’t very beautiful, they made me feel good. I decided to take this path. But wait! I looked at the right one. The path didn’t look nice.  小题2:  Grass grew everywhere. For a long time I couldn’t make up my mind.

 小题3: It wasn’t nice , but I didn’t want to give up. At last, I came to the end of the path. Ah! There was a small garden there. It was beautiful, perhaps the most beautiful garden I had ever seen. 小题4:  

Many people told me that there was nothing much to see in the park. Now I’d like to tell them that if they had followed the right way, they would have felt differently. But when I told them about what I had seen in the park, they just smiled at me without saying a word. I knew they didn’t believe me. They couldn’t even remember that path because it was so small.

 小题5: Don’t be afraid to choose a different path. You may get a big surprise!

A.There is nothing that I want to see.

B.It looked like it had not been cleaned for months.

C.After a while a strange feeling made me follow the dirty path.

D.“ Which way should I go?” I asked myself. I looked at one way, then the other.E. I told them what happened.

F. My trip to the park that day made me understand something about life.

G. There were trees, flowers and chairs. I thought it was the nicest part of the park.

题型:选择题

修筑子埝,要因地制宜,就地取材,一般有如下几种结构形式()。

A、竹笼(或铅丝笼)子埝

B、土料子埝

C、土袋子埝

D、护坡子埝

E、麻袋子埝

题型:选择题

各种溶血性贫血的特殊检查,下列哪一组是错误的()

A.抗人球蛋白试验(Coombs)-自身免疫性溶血性贫血

B.酸化血清溶血试验(Ham)-阵发性睡眠性血红蛋白尿

C.红细胞渗透性增高--遗传性球形红细胞增多症

D.外周血中出现大量靶形红细胞--海洋性贫血

E.蚕豆病--异丙醇试验

题型:选择题

“月晕而风,础润而雨”反映了思维的哪一个特性

A.思维的间接性

B.思维的概括性

C.思维的直觉性

D.思维的抽象性

更多题库