问题 实验题

如图表示在显微镜下看到的一个视野,请据图回答(6分):

(1)同一视野内数量最多的细胞是[ ]_________。

(2)对人体有防御和保护作用的是[ ]__________。

(3)运载血细胞,运输营养物质和废物的是[ ]________;

携带氧气的是[ ]__________;

使血液凝固的是[ ]___________。

⑷某人患急性扁桃体炎,验血时[ ]_________增多。

答案

 ⑴[3]红细胞  ⑵[2]白细胞  ⑶[4]血浆 [3]红细胞  [1]血小板   ⑷[2]白细胞

红细胞的数量最多,白细胞的数量最少,血小板的形态最小,白细胞能够吞噬病菌,对人体有防御和保护作用,血浆具有运载血细胞,运输营养物质和废物的作用,红细胞能够运输氧气,血小板具有止血凝血的功能,体内有炎症时,白细胞的数量会增多,这与白细胞具有吞噬病菌的功能有关。

选择题
完形填空
I went to the classroom with great confidence when I gave my first lesson to my English literature class. Since I had taught in America for many years, I had no 36 ______ about my ability to hold their attention and to 37 ______ them my admiration for the literature of my native language.
I was 38 ______ when the monitor shouted,“ Stand up! ” The whole class 39  ______ as I entered the classroom. I was somewhat 40 ______ how I could get them to sit down again, but once that embarrassment was over, I quickly 41 ______ my calmness and began what I thought was a fact- packed lecture, sure to gain their 42 ______  — perhaps even their admiration. I went back to my office with the rosy glow(满面红光)which came from a sense of 43 ______ .
All ray students 44 ______ diaries. However, as I read their diaries, the rosy glow was gradually 45 ______ by a strong sense of sadness. The first diary said,“ Our literature teacher didn't teach us anything today. Her next lecture will 46 ______ be better. ” Greatly surprised,I read diary after diary, each expressing a 47 ______ theme. “ Didn't I teach them anything? I described the entire philosophical framework of Western thought and laid the historical 48 ______ for all the works we'll study in class, “ I complained. “ How should they say I didn't 49  ______ them anything?"
After a long term ’ I gradually learned that my ideas about 50 ______ were not the same as those of my students. I thought a teacher's job was to 51 ______  questions and provide enough background so that students could 52 their own conclusions, while my students thought a teacher's job was to provide 53 information as directly and clearly as possible. What a great 54 ______ !
However, I also learned a lot, and my 55 ______  with my Chinese students has made me a better American teacher, knowing how to teach in a different culture.
小题1:
A.ideaB. doubtC.troubleD. difficulty
小题2:
A.fix onB. hold onC.focus onD. impress on
小题3:
A.shockedB. amusedC.interestedD. excited
小题4:
A.laughedB. shoutedC.roseD. whispered
小题5:
A.puzzledB. confidentC.anxiousD. curious
小题6:
A.coveredB. hidC.regainedD. won
小题7:
A.satisfactionB. supportC.concernD. respect
小题8:
A.failureB. achievementC.embarrassmentD. sadness
小题9:
A.likedB. keptC.readD. exchanged
小题10:
A. replacedB. heldC.controlledD. caught
小题11:
A. surelyB. naturallyC.obviouslyD. possibly
小题12:
A. normalB. specialC.similarD. disappointing
小题13:
A. knowledgeB. backgroundC.developmentD. information
小题14:
A. explainB. tellC.provideD. teach
小题15:
A. educationB. learningC.cultureD. literature
小题16:
A. discoverB. considerC.raiseD. answer
小题17:
A. drawB. decideC.expressD. share
小题18:
A. usefulB. relatedC.exactD. standard
小题19:
A. conceptB. situationC.challengeD. difference
小题20:
A. discussionB. experienceC.argumentD. growth