题干

2010年3月,英国摄影师勒弗朗向媒体公布了一组北极熊母子被困在狭小浮冰上的照片,勒弗朗回忆说:“它们看上去很焦虑,小北极熊显然是吓坏了,它的身体在微微颤抖着。”结合所学知识,完成各题。

【小题1】北极熊多以近海浮冰为跳板,巡游在海中扑食。然而,近年来科学家多次发现这些“浮冰行者”溺毙的现象,并为这一物种的未来深感忧虑。产生这个问题的主要原因是
A.全球气候变暖,浮冰消融且间距增大B.北极熊物种退化,体质下降
C.人类扑杀,北极熊向外海迁徙D.海洋污染,导致食物减少
【小题2】与上述结论相关的地理现象有
①2010年极端天气袭扰全球 ②低碳经济、低碳生活成为世界趋势 ③北冰洋有望开通夏季航线 ④近年来火山地震频发

A:①②③

B:①②④

C:①③④

D:②③④

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答案(点此获取答案解析)

A

同类题1

阅读下面短文,掌握大意,然后从1-20各题所给的四个选项(A、B、C和D)中,选出最佳答案。

        My husband, Bob, died in January 2004. His death was unexpected as well. I 1 condolences(哀悼)from people I hadn't heard from in years: letters, cards, flowers, calls, and visits. I took a bad knock with 2. I was so struggling to3the whys and hows of this terrible thing that had happened to my family, knowing in my heart that there really were no 4. It's just all so sad.

        One message5me deeply. I received a letter from my best friend from sixth6 through high school. We had drifted somewhat since 7 in 1959, as she stayed in our home town and I did not. 8 it was the kind of friendship that could quickly resume even if we9touch for five or ten years.

        Her husband, Peter, had died perhaps 20 years ago at a young age, 10her with deep sorrow and heavy 11: finding a job and raising three young children. She and Pete, 12 Bob and I, had shared one of those rare, close, "love-of-your-life-you-can-never-forget" 13.

        In her letter she 14 an anecdote about my mother who had passed away years ago. She wrote, "When Pete died, your dear mother 15me and said, 'Trudy, I don't know what to say...so I'll just say I love you.'"

        She closed her letter to me repeating my mother's words of so long16, "Bonnie, I don't know what to say...so I'll just say I love you."

        I felt I 17 almost hear my mother speaking to me now. What a 18 message of sympathy! How dear of my friend to cherish it all those years and then 19 it on to me.I love you. 20 words. A gift. A legacy(遗赠物).