问题 填空题 案例分析题

如图为人体部分神经—体液调节过程示意图,①~⑤为神经元,A和B为神经—肌肉接头,C和D为细胞,a~d为细胞分泌的化学物质。请据图回答问题:

膝跳反射为非条件反射,不需要大脑皮层参与,此反射弧仅由两个神经元组成。若A为膝跳反射的感受器,在完成膝跳反射时神经冲动在图中各神经元上的传导顺序是()(只写编号)。若在⑤上某处施加一强刺激,则能检测到膜内外电位变化的神经元有()(只写编号),原因是神经递质只能由()释放,作用于()。

答案

参考答案:③到②;①②;(⑤);突触前膜;突触后膜

解析:

非条件反射不需要经过高级的神经中枢,故是经过③到②的传递引起反射,若在⑤上某处施加一强刺激,因为神经递质只能由突触前膜释放然后作用于突触后膜,故在神经元之间是单向传递的,则能检测到膜内外电位变化的神经元有①②(⑤)。

判断题
阅读理解

阅读理解。

     The first English week at our school started on May 4th, 2009. The whole school was filled with an English

learning atmosphere. A series of activities was held. There were handwriting activities, story writing, English

songs, role playing in English, and so on, all the teachers and students were very happy. They spoke English,

sang English songs and enjoyed all the activities.

     Handwriting was for the students in lower grades. Although most of them couldn't write so well, they were

all very careful about it. In the show window, there were a lot of colorful handwritten papers. They copied

some articles from books or newspapers. And then they decorated them with pictures in different colors, and

some even put their own photos on them. How cute and lovely they looked!

     Story writing was for students in Grade 7 and Grade 8. These students are always fond of cartoons, so

they got interested in this activity. Reading the stories they made up, all the visitors couldn't help speaking highly of them.

     The most important event was the English show on the last day. The students and teachers presented(上演) a lot of English songs and English operas. Each program won storms of applause.

     One week is not very long, but all the students and teachers learned a lot. Just as the headmaster said,"It is

a helpful week. It will certainly lead us to enjoy and learn more from our English studies."

1. In this passage, the English week is described as ______.

A. surprising

B. boring

C. enjoyable

D. serious

2. Which of the following is Not true?

A. All the students took part in the handwriting contest.

B. The story writing contest was for students in Grade 7 and Grade 8.

C. The English show was the most important event.

D. Teachers also took part in the English week.

3. What does the underlined word "applause" probably mean?

A. Noise

B. Cheer

C. Sound

D. Music

4. What does the writer probably want to tell us at the end of the passage?

A. The activities are a good way to learn English.

B. Students usually don't like English.

C. The activities last longer.

D. Learning English in the classroom is invaluable.