题目内容
【题目】位于长江中上游的某茶场，茶园面积600亩，每年四月、六月、十一月要锄草三次，久而久之，茶园“消瘦”了，同时，锄草需要大量劳动力，困惑之际，茶场主人想到“羊喜吃嫩草，却不吃嫩茶”，于是把羊引进茶园，既节省了人力物力，又保持了水土，肥沃了茶园，可谓一举多得。据此回答下列各题。
【1】根据长江流域地理特征可以推知，三次锄草中水土流失最严重的是 ( )
A. 四月、五月 B. 四月 C. 六月 D. 十一月
【2】茶园“消瘦”的主要原因是( )
A. 缺乏分解者 B. 缺少枯枝落叶
C. 土壤中有机质被微生物分解 D. 表层土壤被大量冲走
【答案】
【1】C
【2】D
【解析】试题分析：
【1】锄草导致水土流失，最严重时间应是雨季，长江流域6月份进入梅雨季节，降水多，地表径流量大，水土流失严重，C对。四、五月份及十一月份不是雨季，降水较少，水土流失少，A、B、D错。
【2】结合材料分析，茶园“消瘦”指的是表层土壤被大量冲走，土壤肥力下降，D对。分解者多少，枯枝落叶多少不是主要原因，A、B、C错。
【题目】Cloze 4（2017·浙江卷）
体裁 | 文章话题 | 词数 | 建议时间 | 难度 | 自测正确率 |
记叙文 | 戒指失而复归 | 206 | 10分钟 | ★★★☆☆ |
Last October, while tending her garden in Mora, Sweden, Lena Pahlsson pulled out a handful of small 1 (carrot) and was about to throw them away. But something made her look closer, and she noticed a 2 (shine) object. Yes, there beneath the leafy top of one tiny carrot was her long-lost wedding ring.
Pahlsson screamed 3 loudly that her daughter came running from the house. ＂She thought I had hurt 4 (I),＂says Pahlsson.
Sixteen years 5 (early), Pahlsson had removed the diamond ring 6 (cook) a meal. When she wanted to put the ring back on later, it was gone. She suspected that one of her three daughters — then ten, eight, and six—had picked it up, but the girls said they hadn’t. Pahlsson and her husband 7 (search)
Pahlsson and her husband now think the ring probably got 8 (sweep) into a pile of kitchen rubbish and was spread over the garden, 9 it remained until the carrot’s leafy top accidentally sprouted (生长) through it. For Pahlsson, its return was 10 wonder.
【题目】读“中国农业区划委员会对我国各地的土地生产潜力和最大可能人口密度估算的部分数据”，分析青藏地区环境人口承载力的特点是( )
估算地区 | 年生产量(万吨) | 可承载人口量(万人) | 最大人口密度(人/平方千米) |
长江中下游 | 88 600 | 22 000 | 395 |
青海、西藏 | 10 000 | 1 000 | 4 |
①地域广大，资源丰富，环境人口承载力大
②地处内陆，气候干旱，环境承载力小
③地理环境“高、寒”，生态脆弱，环境人口承载力小
④充分利用该地区丰富的太阳辐射能，可提高土地生产潜力和环境人口承载力
A. ①② B. ③④ C. ①③ D. ②④