成都專版七年級(jí)下冊(cè)英語(yǔ)聽(tīng)力

【第 13 期】七年級(jí)上冊(cè)第三章 3.3水平測(cè)試參考答案一、1.C 2.C 3.C 4.B 5.A 6.B 7.A 8.C二、9.x = - 7 10.10，等式的性質(zhì) 211. - 2 12.5 13.4 14.4 15.2016.2(x - 1)+ 3x = 13三、17.(1)x = - 17 ;(2)x = 2.18.由題意，得 2 m + 5 + 2m -()12 = 21.解得 m = 2.19.設(shè)火車長(zhǎng)為 x米，根據(jù)題意，得x + 60030= x5 .解得 x = 120.所以，火車的長(zhǎng)度為 120 米.四、20.(1)不正確;①;(2)① 去分母時(shí)不能漏乘項(xiàng);② 當(dāng)括號(hào)外的因數(shù)是負(fù)數(shù)時(shí)，去括號(hào)后括號(hào)內(nèi)的每一項(xiàng)都要改變符號(hào).(3)去分母，得 3(x + 1)- 2(2 - 3x) = 6.去括號(hào)，得 3x + 3 - 4 + 6x = 6.移項(xiàng)，得 3x + 6x = 6 - 3 + 4.合并同類項(xiàng)，得 9x = 7.系數(shù)化為 1，得 x = 79 .21.設(shè)水流速度為 x千米 /時(shí)，根據(jù)題意，得 8(20 + x) = 12(20 - x).解得 x = 4.則 8(20 + x) = 8 ×(20 + 4) = 192.所以，水流速度為 4 千米 /時(shí)，A、B 兩碼頭之間的距離為 192 千米.選做題 22.由題意，得 3(x + 2)- 2〔3(x + 2)- 2〕= 4.解得 x = - 2.所以使等式成立的 x的值為 - 2.23.設(shè)馬馱了 x個(gè)包裹，則騾子馱了(x + 2)個(gè)包裹.根據(jù)題意，得 2(x - 1) = x + 2 + 1.解得 x = 5.則 x + 2 = 7.所以馬馱了 5 個(gè)包裹，騾子馱了 7 個(gè)包裹.

這問(wèn)題夠大的

?Fox and cock
? One morning a fox sees a cock.He
? think,"This is my breakfast.''
? He comes up to the cock and says,"I know
? you can sing very well.Can you sing for me?''The
? cock is glad.He closes his eyes and begins
? to sing.The fox sees that and caches him in his mouth and carries him away.
? The people in the field see the fox.They cry,"Look,look!The fox is carrying the cock away.''The cock says to the fox,"Mr Fox,do you understand?The people say you are carrying their cock away.Tell them it is yours.Not theirs.''
? The fox opens his mouth ang says,"The cock is mine,not yours.''Just then the cock runs away from the fox and flies into the tree.
? 狐貍和公雞
? 一天早上，一只狐貍看到了一只公雞。他想：這是我的早餐。
? 他朝公雞走來(lái)，對(duì)他說(shuō)：“我知道，你能唱得非常好聽(tīng)，你能唱給我聽(tīng)么？”公雞很高興。他閉上眼睛開(kāi)始唱歌。狐貍看到這些抓住它放到自己的嘴里走了。
? 在田地里的人們看到了狐貍。大喊大叫：“看，看！狐貍抓住公雞逃走了?！惫u對(duì)狐貍說(shuō)：“狐貍先生，你能理解么？人們認(rèn)為你叼走了公雞。告訴他們這是你的，不是他們的。”
? 狐貍張開(kāi)她的嘴說(shuō)：“公雞是我的，不是你們的?！本驮谀菚r(shí)，。公雞跑到了樹(shù)底下

龜兔賽跑
有一天，兔子和烏龜跑步，兔子嘲笑烏龜爬得慢，烏龜說(shuō)，總有一天他會(huì)贏。兔子說(shuō)，我們現(xiàn)在就開(kāi)始比賽。兔子飛快的跑著，烏龜拼命地爬，不一會(huì)兒，兔子與烏龜已經(jīng)里的有很大一段距離了。兔子認(rèn)為比賽太輕松了，它要先睡一會(huì)，并且自以為是地說(shuō)很快就能追上烏龜。而烏龜呢，它一刻不停地爬行，當(dāng)兔子醒來(lái)的時(shí)候?yàn)觚斠呀?jīng)到達(dá)終點(diǎn)了。此故事告訴大家：不可輕易小視他人。虛心使人進(jìn)步，驕傲使人落后. 要踏踏實(shí)實(shí)地做事情，不要半途而廢，才會(huì)取得成功

One day, the rabbit and the tortoise run, the rabbit laughed at the tortoise climb slowly, the turtle said, one day he will win. Said the rabbit. "We will start the race now.". The hare runs fast, the tortoise is very hard to climb, not for a while, the rabbit and the tortoise has a lot of distance. The rabbit thinks the game is too easy, it will go to sleep for a while, and self righteous said quickly catch up with the turtle. And the tortoise, it was a moment to crawl, when the rabbit woke up the turtle has reached the end of the. This story tells us: don't belittle others. Modesty makes people progress, proud people behind. To do things, do not give up halfway, will be successful.

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