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第二節(jié)　 聽取信息(共5小題；每小題1分，滿分5分)

聽下面一段對(duì)話，請(qǐng)根據(jù)題目要求，從所聽到的內(nèi)容中獲取必要的信息，填入答題卡標(biāo)號(hào)為16-20的空格中。聽錄音前，你將有10秒鐘的閱題時(shí)間，錄音讀兩遍。你將有60秒鐘的作答時(shí)間。

Suspect(嫌疑犯)

第一節(jié)　 聽力理解(5段共15小題，每小題2分，滿分30分)

每段播放兩遍。各段后有幾個(gè)小題，各段播放前每小題有5秒鐘的閱題時(shí)間。請(qǐng)根據(jù)各段播放內(nèi)容及其相關(guān)小題，在5秒鐘內(nèi)從題中所給的A、B、C項(xiàng)中，選出最佳選項(xiàng)，并在答題卡上將該項(xiàng)涂黑。

聽第一段對(duì)話，回答第1-3題。

1. What is the probable relationship between the two speakers?

A. Teacher and student.

B. Boss and secretary.

C. Workmates.

2. What are the two speakers talking about?

A. Using the left hand.

B. Running machines.

C. Designing machines.

3. What can we learn from the conversation?

A. The woman only uses her right hand.

B. Left-handers can't run the machines.

C. The woman is more skillful than the man.

聽第二段對(duì)話，回答第4-6題。

4. Where does the conversation most likely take place?

A. In a travel agency.

B. At the reception desk of a hotel.

C. At the booking office of the airport.

5. When must the woman leave her room?

A. At 2:00 p.m. tomorrow.

B. At 2:30 p.m. tomorrow.

C. At 3:30 p.m. tomorrow.

6. What suggestion does the man make for the woman' s departure(啟程)?

A. The woman should leave the hotel at 2 p. m.

B. The woman should stay in the hotel for another day.

C. The woman should leave the hotel a bit earlier in case of traffic jams.

聽第三段獨(dú)白，回答第7-9題。

7. What does the woman think of working on movies?

A. Exciting but very hard.

B. Hard and boring.

C. Dangerous.

8. What kind of shots are used in the film?

A. The first shots.

B. The best shots.

C. The shots done by famous directors.

9. What does the woman ask the man to do?

A. Try to be a famous film star.

B. Visit the studio.

C. Come and see a film.

聽第四段對(duì)話，回答第10-12題。

10. What is the weather like in the man's place now?

A. Windy and snowy.

B. Sunny but windy.

C. Cold and wet.

11. What is the weather going to be like in the woman's place?

　A. Sunny and warm.

　B. Windy and rainy.

　C. Sunny but cold.

　12. What is the woman's attitude towards the man's advice?

　A. She takes it seriously.

　B. She doesn't care about it.

　C. She worries about it.

　聽第五段獨(dú)白，回答第13-15題。

　13. What did a boy do?

　A. He suggested that they should build another road.

　B. He volunteered to dig another road.

　C. He volunteered to move the rock away.

　14. When was the rock no longer there?

　A. The following day.

　B. The second time.

　C. After a while.

　15. How did the boy solve the problem?

　A. He dug another road.

　B. He dug a hole next to the rock.

　C. He asked many people to move the rock together.

16．質(zhì)量為m的長(zhǎng)木板A靜止在光滑水平面上，另兩個(gè)質(zhì)量也是m的鐵塊B、C同時(shí)從A的左右兩端滑上A的上表面，初速度大小分別為v和2v，B、C與A間的動(dòng)摩擦因數(shù)均為μ。(1)求B、C剛滑上長(zhǎng)木板A時(shí)，A的加速度(2)為使B、C不相撞，A木板至少多長(zhǎng)？

15．質(zhì)量為m=5×10³ kg的汽車在t₀=0時(shí)速度v₀=10 m／s,隨后以P=6×10⁴w的額定功率沿平直公路繼續(xù)前進(jìn)，經(jīng)72s達(dá)到最大速度，設(shè)汽車行駛過程中所受阻力大小恒為f=2.5×10³ N。求：

(1)汽車能達(dá)到的最大速度v_m;　 (2)汽車在72s內(nèi)經(jīng)過的路程s。

14．.如圖所示，一高度為h=0.2 m的水平面在A點(diǎn)處與一傾角為θ=30°的斜面連接，一小球以v₀=5 m/s的速度在平面上向右運(yùn)動(dòng).求小球從A點(diǎn)運(yùn)動(dòng)到地面所需的時(shí)間(平面與斜面均光滑，取g=10 m/s²).

某同學(xué)對(duì)此題的解法為：小球沿斜面運(yùn)動(dòng)，則=v₀t+g sinθ·t²，

由此可求得落地的時(shí)間t.

問：你同意上述解法嗎？若同意，求出所需時(shí)間；若不同意，則說明理由并給出你認(rèn)為正確的解答。

13．蕩秋千是大家喜愛的一項(xiàng)體育運(yùn)動(dòng)。隨著科技迅速發(fā)展，將來(lái)的某一天，同學(xué)們也會(huì)在其它星球上享受蕩秋千的樂趣。假設(shè)你當(dāng)時(shí)所在星球的質(zhì)量是M、半徑為R，可將人視為質(zhì)點(diǎn)，秋千質(zhì)量不計(jì)、擺長(zhǎng)保持為L(zhǎng)、擺角小于90°、不計(jì)阻力，萬(wàn)有引力常量為G。那么，

(1)該星球表面附近的重力加速度等于多少？

(2)在擺角不大于90°的情況下，你經(jīng)過最低位置時(shí)的速度v₀不能超過多少？

12．(9分)某探究小組設(shè)計(jì)了如下的探究橡皮筋的彈性勢(shì)能與拉長(zhǎng)量之間關(guān)系的實(shí)驗(yàn)：將一長(zhǎng)木板放在桌面上并調(diào)至水平，橡皮筋一端固定在墻上，另一端被靜止的小車?yán)�長(zhǎng)了d。小車釋放后沿長(zhǎng)木板運(yùn)動(dòng)，帶動(dòng)穿過打點(diǎn)計(jì)時(shí)器的紙帶，如下圖所示。打點(diǎn)計(jì)時(shí)器電源頻率為50Hz，小車質(zhì)量為0.2kg,實(shí)驗(yàn)進(jìn)行了三組，各次小車由靜止開始運(yùn)動(dòng)的位置不同(即橡皮筋的拉長(zhǎng)量d不同)，分別打出紙帶，選擇了三條紙帶如下圖所示(圖中最下面的是直尺)。

(1)根據(jù)紙帶數(shù)據(jù)完成上面的表格，其中V_max為小車橡皮筋拉動(dòng)的最大速度：

(2)橡皮筋的彈性勢(shì)能E_p與橡皮筋拉長(zhǎng)量d之間的函數(shù)關(guān)系式是E_p=　　　 。

(3)要減少實(shí)驗(yàn)誤差，該設(shè)計(jì)可改進(jìn)的措施是　　　　　　　　　　　　　 。

11．(3分)在利用重錘下落驗(yàn)證機(jī)械能守恒定律的實(shí)驗(yàn)中正確的是　　

A、應(yīng)該用天平稱出重錘的質(zhì)量。

B、應(yīng)該選用點(diǎn)跡清晰，第一、二兩點(diǎn)間的距離接近2mm的紙帶。

C、操作時(shí)應(yīng)先放紙帶再接通打點(diǎn)計(jì)時(shí)器的電源。

D、打點(diǎn)計(jì)時(shí)器應(yīng)接在電壓為4-6V的交流電源上。