5.自然界中生物種群增長(zhǎng)常表現(xiàn)為“S”型增長(zhǎng)曲線。下列有關(guān)種群“S”型增長(zhǎng)曲線的說法錯(cuò)誤的是( )
A.種群增長(zhǎng)過程中環(huán)境阻力先增大后減小
B.防治蝗災(zāi)應(yīng)在害蟲數(shù)量達(dá)到b點(diǎn)之前進(jìn)行
C.草原放牧量應(yīng)控制在e點(diǎn)
D.隨著環(huán)境條件的改變,K值會(huì)出現(xiàn)波動(dòng)
4.人體的下列活動(dòng)中,都與下丘腦有關(guān)的是( )
![]()
①汗液的分泌 ②腎上腺素的合成、鄹翁窃暮铣伞、苎獫{正常pH的維持、菝谌
A.①②③ B.②③④
C.①②⑤ D.③④⑤
3.如圖表示某種酶在不同處理?xiàng)l件(a、b、c)下催化某反應(yīng)時(shí),反應(yīng)物的量和反應(yīng)時(shí)間的關(guān)系,解讀此圖可獲得的信息是( )
![]()
A.a、b、c表示溫度,則一定是a>b>c
B.a、b、c表示酶的濃度,則a>b>c
C.a、b、c表示底物的濃度,則a>b>c
D.a、b、c表示溫度,則不可能是a>b>c
2.中新網(wǎng)廣州2008年1月13日電:近日,一名慢性乙肝肝硬化患者在廣東嶺南肝病研究所進(jìn)行自體骨髓干細(xì)胞移植獲成功。目前,該患者肝功能各項(xiàng)指標(biāo)恢復(fù)正常,從而達(dá)到骨髓干細(xì)胞變成肝細(xì)胞代行肝功能的治療目的。下列敘述錯(cuò)誤的是( )
A.乙肝病毒和不合理飲食都可能導(dǎo)致肝硬化
B.骨髓干細(xì)胞被移植到患者肝臟組織后,在肝臟微環(huán)境調(diào)節(jié)下“入鄉(xiāng)隨俗”地分化為肝細(xì)胞,但是遺傳物質(zhì)并未發(fā)生改變
C.由于干細(xì)胞無法殺死腫瘤細(xì)胞,因此,自體干細(xì)胞移植技術(shù)尚無法應(yīng)用于肝癌的治療
D.干細(xì)胞之所以具有“因地分化”的特性,是由于基因表達(dá)過程中細(xì)胞能選擇性地利用所含有的mRNA合成相應(yīng)的蛋白質(zhì)
1.據(jù)英國媒體BBC報(bào)道,諾貝爾獎(jiǎng)得主著名生物學(xué)家巴爾的摩教授說,艾滋病病毒疫苗的研制工作經(jīng)過了20多年后仍沒有希望取得突破。巴爾的摩認(rèn)為,由于艾滋病病毒進(jìn)化出了可以從人類免疫系統(tǒng)中保護(hù)自己的方式,已經(jīng)找到“愚弄”人類的免疫系統(tǒng)的方法。因此科學(xué)家試圖以抗體或加強(qiáng)人類免疫系統(tǒng)來防御艾滋病病毒的方法都以失敗告終。下列敘述錯(cuò)誤的是( )
A.HIV能夠侵入T細(xì)胞,導(dǎo)致患者的特異性免疫功能下降
B.科學(xué)家試圖以抗體來防御HIV以失敗告終的主要原因是患者體內(nèi)無法產(chǎn)生與HIV特異性結(jié)合的抗體
C.HIV的遺傳物質(zhì)RNA易發(fā)生變異,是疫苗研制困難的原因之一
D.效應(yīng)T細(xì)胞只選擇性破壞已經(jīng)被病原體感染的靶細(xì)胞
第四節(jié)、聽長(zhǎng)對(duì)話,填寫表格。(讀兩遍)
W: Where are we going for our school trip this year?
M: We are going to the Great Wall.
W: How will we get there?
M: We’ll go there by bike.
W: That sounds like fun. What should we take first?
M: We’ll take food and water.
W: What else do we need?
M: Medicine. We might get ill. And we should wear jackets and sports shoes.
W: You are right.
浙江省松陽縣八年級(jí)第二學(xué)期初中教學(xué)質(zhì)量調(diào)測(cè)英語試題聽力材料
:第一節(jié):聽小對(duì)話,選擇圖片。(讀一遍)
1. M: Oh, what a rainy day!
W: Yeah, but we really had good weather yesterday.
M: Do you think it will be sunny tomorrow?
W: I hope so. It is said that it will be sunny tomorrow.
2.M: Hey, Ellen. Why didn’t you come to my house on Saturday night?
W: Sorry, Bob. I went to a dancing party.
M: Did you enjoy yourself?
W: Yes.
3.M: Hi, Tracy. What are you doing?
W: I am practicing cooking. I will be a mother of a cute child in 10 years.
M: What? Are you kidding?
W: No, I’m serious. I love children.
4.M: I saw Scott crying in the corner. What happened?
W: He hurt himself just now.
5.S1: What’s the date today?
S2: It’s June 1.
第二節(jié):聽小對(duì)話,選擇答案。(讀一遍)
6. W: Can I help you , sir?
M: Yes, I am looking for a pair of shoes for my daughter.
7.M: Lily ! Someone is knocking at the door, Would you please open it ?
W: But, Dad! I have heard nothing.
M: Turn down your radio, and you will hear.
8. W: Hi, Jim ! May I borrow your bike? I’ll go to post a letter.
M: Sure, Mary. But where is yours?
W: My sister has it today.
9. M: Shall we go boating or have a picnic tomorrow?
W: I’m afraid we can’t go anywhere because the radio said it was going to rain tomorrow.
M: Oh, bad luck, I don’t like staying at home.
10.W: Jack! Which season do you like better , spring or autumn?
M: Autumn. But summer is my favorite season because I can
swim in summer. 第三節(jié)、聽長(zhǎng)對(duì)話,選擇答案。(讀兩遍 )
A) 聽第一段對(duì)話,回答第11-12小題。
M. Excuse me ,Is there any direct plane from here?
W. Yes, There is one on Sunday, Monday, Wednesday and Friday.
M: When does it leave on Wednesday?
W: At 7:35 in the morning.
M: And when will it arrive?
W: At 10:35.
M: Ok. Thanks.
W: That’s OK.
B) 聽第二段對(duì)話,回答第13-15小題。
W: Peter, can you help me for a minute?
M: Yes, what do you want me to do, Mom?
W: Will you take the trash out?
M: Do I have to do it now?
W: Well, you don't have to do it now. But don't forget to do it today.
M: All right. I really must go now; or I'll be late for school.
W: You have an exam this morning, don't you? You mustn't be late.
6. 7. 8. 9. 10.
1. 2. 3. 4. 5.
1. 2. 3. 4. 5.
6. 7. 8. 9. 10.
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