题目内容：
根据下列材料请回答题：Seven years ago, when I was visiting Germany, I met with an official who explained to me that the country had a perfect solution to its economic problems. Watching the U.S. economy 62 during the' 90s, the Germans had decided that they, too, needed to go the high-technology _63_. But how? In the late' 90s, the answer schemed obvious: Indians. _64_ all, Indian entrepreneurs accounted for one of every three Silicon Valley start-ups. So the German government decided that it would _65_ Indians to Germany just as America does: by _66_ green cards. Officials created something called the German Green Card and _67_ that they would issue 20,000 in the first year. _68_, the Germans expected that tens of thousands more Indians would soon be begging to come, and perhaps the _69_ would have to be increased. But the program was a failure. A year later _70_ half of the 20,000 cards had been issued. After a few extensions, the program was _71_.
I told the German official at the time that I was sure the _72_ would fail. It's not that I had any particular expertise in immigration policy, _73_ I understood something about green cards, because I had one (the American _74_). The German Green Card was misnamed, I argued, _75_ it never, under any circumstances, translated into German citizenship. The U.S. green card, by contrast, is an almost _76_ path to becoming American (after five years and a clean record. The official _77_ my objection, saying that there was no way Germany was going to offer these people citizenship. “We need young tech workers,” he said. “That's what this program is all _78_.” So Germany was asking bright young _79_ to leave their country, culture and families, move thousands of miles away, learn a new language and work in a strange land—but without any _80_ of ever being part of their new home. Germany was sending a signal, one that was _81_ received in India and other countries, and also by Germany's own immigrant community.
A．soar
B．hover
C．amplify
D．intensify
参考答案：
答案解析：