题目

语法填空 The 21st century is dominated by more technology-oriented inventions than before. The 20th century (see) man land on the moon. The 21st century will witness man landing on several planets. The first will be Mars, also (call) the Red Planet. As planned by NASA, the mission can be achieved by 2030. That will set a precedent(先例) for explorations by future generations. Furthermore, increased investment in research is likely (lead) to the discovery of a vaccine for AIDS. Technology is advancing fast. Social media at present acts as one of the leading64 (source) of news and interaction, has a negative influence on traditional media, (particular) print newspapers. Social media will soon take over the market. Mobile phones will play a greater role the purchase of goods, as well as the withdrawing and depositing of money. Electronic money will replace paper money. In addition, with declining oil reserves across the world, electric cars will replace petrol cars in a few decades. As  result, there will be a major shift in job trends. Global warming will become an even (big) problem, with sea levels (continue) to rise. Freshwater sources will be polluted. Fresh water will become a major issue. Hence environmental destruction will increase greatly. 答案：【1】saw【2】called【3】to lead【4】sources【5】which【6】particularly【7】in【8】a【9】bigger【10】continuing

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