问题
选择题
能源、信息和材料是现代社会发展的三大支柱，关于它们下列说法中正确的是 [ ]
A．超导体材料主要是应用在电饭锅等电器上
B．大亚湾核电站利用的是核聚变释放的能量
C．太阳能、风能、天然气是可再生能源
D．雷达是利用电磁波采进行定位和导航的。
答案
答案：D
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能源、信息和材料是现代社会发展的三大支柱，关于它们下列说法中正确的是 [ ]
A．超导体材料主要是应用在电饭锅等电器上
B．大亚湾核电站利用的是核聚变释放的能量
C．太阳能、风能、天然气是可再生能源
D．雷达是利用电磁波采进行定位和导航的。
答案：D
| 完形填空。 A group of frogs were traveling 1 the forests, but suddenly two of them fell into a hole. The other frogs tried to help them. When they saw how deep the hole was, they cried to the two frogs that they could not be saved. The two frogs didn't 2 and tried their best to jump up out of the hole. The other frogs 3 saying that they were sure to die. 4 , one of the two frogs, who heard what the other frogs were saying, gave up. Then he fell down and died. The 5 frog, however, continued to jump as 6 as he could, and at last made it out. When he 7 , the other frogs asked, "Didn't you hear us?" The frog, who had a poor 8 , said, "I thought you were encouraging me all the time." The story teaches us a 9 :There is power (力量) of life and death in the tongue. An encouraging 10 to those who are down can help them out while a discouraging word can kill them. | ||||
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