23. -When shall we go to the museum, this afternoon or tomorrow morning?
-_____ is OK. I’m free these days.
A. Both B. All C. Either D. Neither
22. -______ hard work you have done!
-It’s very kind of you to say so.
A. What B. How C. What a D. How a
第四节:听下面三段短文,根据短文内容及所给问题选择正确答案。(每段短文读两遍)
听下面的短文,回答15至16小题。
15. How are more people reading now?
A. Reading from books. B. Reading from newspapers. C. Reading online.
16. What does the speaker think of the Internet?
A. Interesting. B. Convenient. C. Boring.
听下面的短文,回答17至18小题。
17. What did the speaker’s class talk about?
A. How to deal with the waste.
B. How to protect the environment.
C. How to save money.
18. If we don’t know how reuse the waste things, what should we do?
A. We can throw them away.
B. We can sell them to the recycling.
C. We can ask others for help.
听下面的短文,回答19至20小题。
19. How long did the first balloon trip last in 1783?
A. Eight minutes. B. Eight hours. C. Eight Days.
20. Finally how did the American and the Frenchman save themselves?
A. They jumped out of the balloon.
B. They threw away most of their things.
C. They stopped the balloon.
第三节:听下面四小段对话,每小段对话后有一个问题,根据对话内容及问题,选择正确的答案。(每段对话读两遍)
11. What is Tom making?
A B C
12. When did the concert begin?
A. At 8:00 B. At 7:45 C. At 8:15
13. Where does this conversation probably take place?
A. In a hospital. B. In the street. C. On a bus.
14. How did Stephen improve his English?
A. By speaking B. By reading C. By writing
第二节:情景反应。听句子,根据你所听到的句子,从A、B、C三个选项中选择最恰当的应答语。(每个句子读一遍)
6. A. I’m afraid you can’t B. That’s great C. It doesn’t matter
7. A. Good idea B. At 7 o’clock C. Not at all
8. A. No, please do it. B. Yes, you can do it. C. It’s very kind of you.
9. A. She is better now. B. She likes dancing. C. She is tall and pretty.
10. A. Since last month. B. September. C. Six o’clock
第一节:听句子,从A、B、C三个选项中选择与你所听到的内容相同或相近的选项。(每个句子读一遍)
1. A. parent B. present C. pleasant
2. A. 83662817 B. 83662617 C. 83262817
3. A. thought B. caught C. bought
4. A. Anyway, I’ll tell you the secret.
B. If you don’t tell the secret to others, I’ll tell you.
C. If you tell the secret to others, I’ll tell you.
5. A. John doesn’t like football.
B. John prefers volleyball to football.
C. John prefers football to volleyball.
30.Ⅰ(1)XrY XR
(2)(红眼)雄 (白眼) 雌 红眼♀、白眼♂、白眼♀
(3)XRXr 和 XRXrY
Ⅱ.(1)绿色、黄色 无纹、条纹 绿色无纹
(2)F1: AaBb × AaBb
绿色无纹 绿色无纹
↓
后代:
|
AB |
Ab |
aB |
ab |
AB |
AABB 致死 |
AABb 致死 |
AaBB 绿色无纹 |
AaBb 绿色无纹 |
Ab |
AABb 致死 |
AAbb 致死 |
AaBb 绿色无纹 |
Aabb 绿色条纹 |
aB |
AaBB 绿色无纹 |
AaBb 绿色无纹 |
aaBB 黄色无纹 |
aaBb 黄色无纹 |
Ab |
AaBb 绿色无纹 |
Aabb 绿色条纹 |
aaBb 黄色无纹 |
Aabb 黄色条纹 |
绿色无纹:黄色无纹:绿色条纹:黄色条纹=6:3:2:1
后代也可写为: AaB__ aaB__ Aabb aabb
绿色无纹:黄色无纹:绿色条纹:黄色条纹
6 : 3 : 2 : 1
致死的基因型为:AABB、AABb、AAbb
29.Ⅰ. (1)大多数土壤动物身体微小,活动范围小,标记个体难与无标记个体充分混匀
(2)铬浓度越大,螨类密度越高
(3)不同的耐污能力 自我调节能力
Ⅱ(1)1)胰高血糖素 肝糖原
(2)1)促甲状腺激素释放激素
2)抗利尿激素 氨基酸、葡萄糖、无机盐离子(电解质)等 3)A E
4)生物电→化学物质→生物电(电信号→化学信号→电信号) 5)B
(3)2)(在外界甲状腺素浓度较低的情况下,)甲状腺激素能够抑制垂体分泌TSH
3)(在外界甲状腺素浓度较低的情况下,)下丘脑能促进垂体分泌TSH
30.Ⅰ已知果蝇是XY型性别决定,体细胞中含一条X染色体的是雄性(如6+XY,6+X,6+XYY,其中6+X不育),含两条X染色体的是雌性(如6+XX,6+XXY,都可育),含3条或0条X染色体表现为胚胎期致死,有Y或无Y染色体都不影响性别。现有一只基因型为XrXr的白眼雌果蝇和基因型为XRY的红眼雄果蝇杂交,F1中出现白眼雄果蝇和红眼雌果蝇,还出现少数白眼雌果蝇和不育的红眼雄果蝇。如将F1中白眼雌果蝇与基因型为XRY的红眼雄果蝇杂交,F2中出现白眼雄果蝇和红眼雌果蝇,又出现少数白眼雌果蝇和可育的红眼雄果蝇。
(1)F1中白眼雄果蝇、红眼雄果蝇的基因型分别是 、 。
(2)F1中红眼雄果蝇的X染色体来自亲本中的 蝇,白眼雌果蝇的X染色体来自亲本中的 蝇,并将其传给F2中表现型为 的果蝇。
(3)F2中红眼雌果蝇的基因型是 。
Ⅱ.雕鸮(鹰类)的下列性状分别由位于两对常染色体上的两对等位基因控制,分别用A、a和B、b表示,其中有一对基因(设为A、a)具有纯合致死效应。已知绿色条纹雕鸮与黄色无纹雕鸮交配,Fl为绿色无纹和黄色无纹,比例为1:1。当Fl的绿色无纹雕鸮彼此交配时,其后代表现型及比例为:绿色无纹:黄色无纹:绿色条纹:黄色条纹=6:3:2:1。请据此分析回答下列问题:
(1)雕鸮这两对相对性状分别为 和 。其中显性性状为 。
(2)写出Fl代绿色无纹雕鸮交配的遗传图解。(请标出致死的基因型)
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