由于世界人口急剧增长，加上极端气候及病虫害所带来的粮食减产，目前全球有约10亿人在挨饿，数以百万计的人陷入更深的贫困，世界粮食安全问题日益突出。由此可见（）
A.世界各国面临的根本利益是一致的
B.经济全球化是当今世界的基本特征
C.世界和平与发展面临着严峻的挑战
D.全球发展最突出问题是粮食安全问题
参考答案：C
解析：
世界各国是不同的利益主体，根本利益不可能一致，A说法错误；全球发展的突出问题是南北发展不平衡问题，D说法错误；B与材料内容不符；世界粮食安全问题日益突出，说明世界和平与发展面临严峻的挑战，威胁和平与发展的因素依然存在，C说法正确。
考点：本题考查当今时代的主题。
阅读下面短文，掌握其大意，然后从21-30各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。 One day, Miss Ellis gave her pupils a new kind of homework: homework on happiness. Her pupils would be “happiness 1 ”, and were to see what would happen when they tried to bring happiness to those around them. As part of their homework, all the students did really 2 , wonderful things, but what Carla Chalmers did left everyone 3 . Several days after the homework had been handed out, Carla turned up carrying a big bag. “Here in this bag I have all the happiness I’ve collected so far,” she said 4 . On seeing this, everyone was filled with 5 , but Carla didn’t want to show anyone what was in the bag. Instead, she pulled out a small box and gave it to her teacher. When Miss Ellis had taken the box, Carla took a(n) 6 camera out of her own pocket and stood with it at the ready. “Open it, Miss Ellis.” The teacher slowly opened the box and looked inside. A big smile 7 on her face, and at that moment Carla took a photo, Carla’s photo came out of the camera immediately, and she 8 it to Miss Ellis along with a sheet of paper. The teacher read the paper in silence, and when she, had finished, she gestured at the 9 . “Oh, so it’s…” “Yes!” 10 Carla, opening the bag. “It’s a great big pile of smiles!” She opened the bag and photos of different 11 fell out. The rest of the class tried to 12 how Carla had managed to create such a great big chain of happiness. All there in the box was a photo of a big smile. But everyone who had seen it felt happiness being transmitted（传送）to them, and in return, without 13 , every person 14 with a smile of their own. She managed to 15 understanding of the smile truth that every time you smile you are sending a gift to the world.
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