【題目】 我國有一座山脈,該山脈以北夏秋季節(jié)蘋果掛滿枝頭,冬季樹木落葉;該山脈以南稻田逑片,柑橘滿山,樹木四季長青。據(jù)此,完成下面小題。

【1】該山脈與淮河共同構成了我國東部地區(qū)重要的地理分界線,該山脈是（ ）

A.昆侖山脈B.祁連山脈C.陰山山脈D.秦嶺

【2】造成該山脈南北兩側自然景觀不同的主要原因是（ ）

A.地形不同B.氣候不同C.耕種方式不同D.耕種技術不同

【3】該山脈與淮河共同構成了我國東部地區(qū)重要的地理界線,它與下列界線大致相吻合（ ）

①1月份0°C等溫線

②400毫米年等降水量線

③800毫米年等降水量線

④季風區(qū)和非季風區(qū)的分界線

⑤濕潤地區(qū)和半濕潤地區(qū)的分界線

A.①②④B.①②③C.①③⑤D.②③④

【答案】

【1】D

【2】B

【3】C

【解析】

根據(jù)秦嶺、淮河一線是我國東部地區(qū)重要的地理界線，在它的南北兩側，自然環(huán)境、地理景觀和居民的生產(chǎn)生活習慣有明顯的差異．秦嶺、淮河主要是我國四大區(qū)域中，南方地區(qū)與北方地區(qū)的分界線；一月份0℃等溫線通過的地方；800mm等降水線通過的地方；溫度帶中，暖溫帶與亞熱帶分界線；干濕地區(qū)中，濕潤區(qū)與半濕潤區(qū)分界線；溫帶季風氣候與亞熱帶季風氣候分界線；水稻、小麥的分界線；水田與旱地的分界線；亞熱帶常綠闊葉林與暖溫帶落葉闊葉林的分界線等，進行分析解答。

【1】

秦嶺與淮河共同構成了我國東部地區(qū)重要的地理分界線，是我國四大區(qū)域中，南方地區(qū)與北方地區(qū)的分界線；一月份0℃等溫線通過的地方；800mm等降水線通過的地方，D正確。故選D。

【2】

秦嶺——淮河一線為我國一月0℃等溫線，同時也是我國800mm等降水量線，因此，南北兩側氣候的不同，從而影響到兩側種植業(yè)的不同，南方為水田，主要種植水稻，北方為旱地，主要種植小麥，B正確。故選B。

【3】

秦嶺、淮河一線是我國東部地區(qū)重要的地理界線，是1月份0°C等溫線經(jīng)過的地方；是800毫米年等降水量線經(jīng)過的地方；是濕潤地區(qū)和半濕潤地區(qū)的分界線等，C正確。故選C。

本題主要考查秦嶺——淮河的地理意義。

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