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【单选题】
面部表情在导游讲解中有着十分重要的地位，美国心理学家艾伯特·梅拉比安通过研究得到的关于信息总效果的公式是（）。A.
信息的总效果=55%言词+38%语调+7%面部表情
B.
信息的总效果=38%言词+7%语调+55%面部表情
C.
信息的总效果=7%言词+55%语调+38%面部表情
D.
信息的总效果=7%言词+38%语调+55%面部表情
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反馈参考答案：
举一反三
【单选题】Suppose a country has been running a persistent government budget deficit. If the deficit is reduced, but remains positive,
A.
government debt will increase.
B.
government debt will decrease.
C.
the country will experience a budget surplus.
D.
interest payments on the debt immediately will decrease.
【单选题】Suppose a country is producing $20 million of real GDP. If the economy grows at 10 percent per year, approximately how many years will to take for real GDP to grow to $80 million?
A.
14
B.
7
C.
4
D.
30
【单选题】Suppose a country is much richer than the others in the Solow growth model. What happens in the long run?
A.
The other countries catch up to the rich one.
B.
The rich country grows the fastest.
C.
The rich country becomes poorer than the others.
D.
Nothing.
【单选题】Suppose a country is producing $20 million of real GDP. If the economy grows at 10 percent per year, approximately how many years will to take for real GDP to grow to $80 million?
A.
14.00
B.
7.00
C.
4.00
D.
30.00
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