国产乱淫av片免费,天天躁日日躁aaaa视频,中文在线第一页

【題目】紅軍長征是一部驚心動魄、氣壯山河的史詩。赤水河為長江上游支流。1935年1月至3月，紅軍在茅臺-赤水斷成功四渡赤水。下圖為赤水河流域圖。

說明紅軍渡河季節該河段的水文特征及其成因。

【答案】(10分）該地區屬于亞熱帶季風氣候，河流以降水補給為主；（2分）冬春季降水少；（2 分）故河流處于枯水期，流量較小（水位較低)；（2分）流量減少（侵蝕搬運能力減弱），含沙量較小：（2分）冬春手節氣溫多在0℃以上（或較低)，不結冰（或水溫較低）。（2分）

【解析】

試題分析：該河段在云貴高原，屬于亞熱帶季風氣候，河流以降水補給為主；渡河是在1-3月，是冬春季，該季降水少，故河流處于枯水期，流量較小，水位較低；流量減少，河流的侵蝕搬運能力減弱，含沙量較小；且冬春手節氣溫較低，但是亞帶河流不結冰，但水溫較低。

練習冊系列答案

年級	高中課程	年級	初中課程
高一	高一免費課程推薦！	初一	初一免費課程推薦！
高二	高二免費課程推薦！	初二	初二免費課程推薦！
高三	高三免費課程推薦！	初三	初三免費課程推薦！
更多初中、高中輔導課程推薦,點擊進入>>

相關習題

科目：高中地理 來源： 題型：

【題目】第二節（共10小題；每小題1.5分，滿分15分）

閱讀下面材料，在空白處填入適當的內容（1個單詞）或括號內單詞的正確形式。

Chengdu has dozens of new millionaires, Asia’s biggest building, and fancy new hotels. But for tourists like me, pandas are its top____1_(attract).

So it was a great honour to be invited backstage at the not-for-profit Panda Base, where ticket money helps pay for research, I_____2_（allow）to get up close to these cute animals at the 600-acre centre. From tomorrow, I will be their UK ambassador. The title will be __3___(official) given to me at a ceremony in London. But my connection with pandas goes back ____4__ my days on a TV show in the mid-1980s, ____5_ I was the first Western TV reporter__6___ (permit) to film a special unit caring for pandas rescued from starvation in the wild. My ambassadorial duties will include ____7_(introduce) British visitors to the 120-plus pandas at Chengdu and others at a research in the misty mountains of Bifengxia.

On my recent visit, I help a lively three-month-old twin that had been rejected by _____8_ (it) mother. The nursery team switches him every few __9__( day) with his sister so that while one is being bottle-fed, __10____ other is with mum-she never suspects.

查看答案和解析>>

科目：高中地理 來源： 題型：

【題目】短文改錯(共10小題；每小題l分，滿分10分)

假定英語課上老師要求同桌之間交換修改作文，請你修改你同桌寫的以下作文。文中共有10處語言錯誤，每句中最多有兩處。每處錯誤僅涉及一個單詞的增加、刪除或修改。

增加：在缺詞處加一個漏字符號(∧)，并在其下面寫出該加的詞。

刪除：把多余的詞用斜線(＼)劃掉。

修改：在錯的詞下畫一橫線，并在該詞下面寫出修改后的詞。

注意：

1. 每處錯誤及其修改均僅限一詞；

2. 只允許修改10處，多者(從第11處起)不計分。

It was on a warm autumn day that my father and I walk into my new high school. After registered in the classroom, the volunteer took me to my dormitory. Altogether I had five roommates, two of which arrived later. I got to know my new roommate immediately. Although I was quite unwilling to say “Goodbye” to my father, but he had to leave to my hometown in the evening. I suddenly realized I had grown up and that I had to look after me and live independently. Not until then I know my senior high school life had real begun.