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  3. The United States’ predominance in science and technology is fading, a report released this month by the National Science Board

The United States’ predominance in science and technology is fading, a report released this month by the National Science Board

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问题     The United States’ predominance in science and technology is fading, a report released this month by the National Science Board warns. The report underlines what a powerhouse the United States【C1】______in knowledge- and technology-intensive industries, including high-tech manufacturing, energy and drug industry. All in all, those industries【C2】______for about 40 percent of American economic output, more than in any other developed country, it finds.
    But with the rise of increasingly【C3】______emerging economies, the report suggests, underinvestment in research and development might translate into a less【C4】______, less productive American economy in the future.
    The world is【C5】______a "dramatic shift in the global scientific: landscape," said Dan E. Arvizu, chairman of the National Science Board. "Emerging economies understand the【C6】______science and innovation play in the global marketplace and in economic competitiveness and have increasingly placed a【C7】______on building their capacity in science and technology," he said.
    The Asian economies now perform a larger【C8】______of global research and development than the United States does. China carries out about as much high-tech manufacturing as the United States does, the report found.
    But the report also highlights some important market sectors where the United States appears to be falling behind. More【C9】______, the report finds that the United States might be【C10】______in the research and development spending that scientists say is the most important fuel for future innovation. Moreover, many countries spend larger and faster-growing proportions of their economic output on research.
A) account E) directly I) limited M) share
B) competitive F) dominant J) priority N) undergoing
C) concern G) effect K) remains O) worryingly
D) decays H) lagging L) role
【C5】
选项
答案N
解析 该空位于is之后，其后接修饰成分完整的名词，故推知这里“is______”共同作句子谓语，故应该填上及物动词的现在分词形式。undergoing意为“经历”，填入文中表示世界“正经历着全球科学版图的剧变”。lagging是不及物动词，其后常与behind搭配。
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