题目内容

【题目】读下图“我国局部地区等高线示意图”,完成下列问题。

(1)A省区的主体民族是

(2)B是 (地形区的名称),判断依据是

(3)图中流经C地形区的河流干流典型的水文特征是

(4)C地形区最突出的生态问题是 ,分析其对本区和下游地区造成的危害 是

【答案】(1)蒙古族 (2)华北平原 经纬度位置或海拔高度在200米以下 (3)含沙量大 (4)水土流失严重 本区地表肥沃土壤流失,河流含沙量剧增;淤塞下游河床、水库(或下游形成地上河),易产生洪涝灾害。

【解析】(1)由图可知,A省区是内蒙古自治区,这里的主体民族是蒙古族。

(2)B是华北平原,从经纬度位置或海拔高度在200米以下可判断出。

(3)图中流经C地形区的河流干流典型的水文特征是含沙量大,因为这里流经水土流失严重的黄土高原。

(4)C地形区是黄土高原,最突出的生态问题是水土流失严重,对本区和下游地区造成的危害有本区地表肥沃土壤流失,河流含沙量剧增;淤塞下游河床、水库,易产生洪涝灾害。

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【题目】

What will you do with an old calendar. Throw it away? A student band from Beijing No. 5 Middle School can use it as a paper music instrument.

On the evening of 12 August 15 students of the band gave a successful show in a theatre in Finland. All their instruments were made _______ materials (材料) like old calendars and_______ rackets(球拍). "We try to play beautiful music' and_______ on the eco-friendly concept (环保概念)," said Dai Yixin, the teacher of the band.

Chen Shanshan, 13, played her self-made Hawaiian guitar at the show. The guitar is made of a big wood pile(木桩). She_______ it in a building site.

"It's a good material to make a guitar," said Chen. "But the noise is a big_______ Chen tried to change its inner construction (内部结构) to make the noise as_______ as possible. After hundreds of _______ , the guitar finally tuned to a beautiful sound.

Tao gingxiao, 14, got his Chinese lute (琵琶) from an old tennis racket. When he joined the band, Tang didn't know_______ to play the lute at all. And it was only one month _______ the upcoming show in Finland.

Day and night, Tao practised playing________ he was free. After hard training, he finally could play the lute well.

"When people applauded (鼓掌) for us, I was amazed by my recycled-material instrument," Tang said.

1A. up of B. into C. from D. out of

2A. repaired B. broken C. fixed D. polluted

3A. take B. make C. put D. pass

4A. sold B. discovered C. made D. produced

5A. idea B. music C. problem D. object

6A. loud B. much C. low D. high

7A. results B. inventions C. instructions D. tests

8A. how B. what C. why D. where

9A. after B. until C. since D. before

10A. whenever B. because C. whatever D. unless

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