题目

氢气是一种很有前途的能源物质，以水为原料制取氢气的最理想的途径是A．利用太阳能直接使水分解产生氢气    B．以焦炭和水制取水煤气分离出氢气C．用铁和盐酸反应放出氢气                  D．由热电站提供电力电解水产生氢气 答案：A语法填空。A traveller came to a village carrying nothing but an empty pot．He was h1., but nobody would offer their food to him．The traveller then f2. the pot with water, put a large stone into it, and placed it o3.a fire in the village square.One of the villagers asked w4. he was doing．The traveller answered,“I’m making ‘stone soup’.” The villager seemed i5.The traveller continued,“The soup tastes wonderful but I need some carrots to makei6.more tasty.”The villager then b7. him some carrots and put them in the pot.Another villager walked by, asking about the pot, a8. the traveller again told him about his stone soup．This time he really needed some meat．The villager brought him some meat to help him out.More and more villagers walked by．Each added o9. things．Finally, the traveller had a delicious pot of soup．Of course, he s10.it with everyone.