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随着行业水平的提高，行业集中度逐渐提高，未来几年，测试准备的增长率将很高。
1、备考价值链
为了帮助客户提高市场地位，这份美国备考市场预测报告对市场领导者进行了详细分析。它提供了有关这些公司的能力和能力的信息。该报告还详细介绍了市场竞争格局，并提供了各公司提供的产品信息。此外，美国报告中的这份测试准备市场分析还包括将影响市场增长的未来趋势和挑战的信息。这将有助于公司制定战略，充分利用未来的增长机会。
最大的陷阱之一是，你击中的目标可能不是你瞄准的目标；也就是说，测试分数可能无法衡量你想要他们做什么。例如，如果所有的测试项目都要求学生只是复述事实信息，那么测试就不太可能有效地衡量学生应用知识或解决问题的能力。
2、实际GDP1（与上年相比的百分比变化）
|
|
2016 |
2017 |
2018 |
2019e |
2020f |
2021f |
2022f |
|
World |
2.6 |
3.2 |
3.0 |
2.4 |
2.5 |
2.6 |
2.7 |
|
Advanced Economies |
1.7 |
2.4 |
2.2 |
1.6 |
1.4 |
1.5 |
1.5 |
|
United States |
1.6 |
2.4 |
2.9 |
2.3 |
1.8 |
1.7 |
1.7 |
|
Euro Area |
1.9 |
2.5 |
1.9 |
1.1 |
1.0 |
1.3 |
1.3 |
|
Japan |
0.6 |
1.9 |
0.8 |
1.1 |
0.7 |
0.6 |
0.4 |
|
Emerging Market and Developing Economies (EMDE) |
4.2 |
4.5 |
4.3 |
3.5 |
4.1 |
4.3 |
4.4 |
|
Commodity-exporting EMDE |
1.6 |
2.2 |
2.0 |
1.5 |
2.6 |
2.9 |
3.0 |
|
Other EMDE |
6.0 |
6.2 |
5.8 |
4.8 |
5.1 |
5.2 |
5.2 |
|
Other EMDE excluding China |
5.1 |
5.4 |
5.0 |
3.3 |
4.0 |
4.4 |
4.5 |
|
East Asia and Pacific |
6.4 |
6.5 |
6.3 |
5.8 |
5.7 |
5.6 |
5.6 |
|
China |
6.7 |
6.8 |
6.6 |
6.1 |
5.9 |
5.8 |
5.7 |
|
Indonesia |
5.0 |
5.1 |
5.2 |
5.0 |
5.1 |
5.2 |
5.2 |
|
Thailand |
3.4 |
4.0 |
4.1 |
2.5 |
2.7 |
2.8 |
2.9 |
|
Europe and Central Asia |
1.9 |
4.1 |
3.2 |
2.0 |
2.6 |
2.9 |
2.9 |
|
Russia |
0.3 |
1.6 |
2.3 |
1.2 |
1.6 |
1.8 |
1.8 |
|
Turkey |
3.2 |
7.5 |
2.8 |
0.0 |
3.0 |
4.0 |
4.0 |
|
Poland |
3.1 |
4.9 |
5.1 |
4.3 |
3.6 |
3.3 |
3.1 |
|
Latin America and the Caribbean |
-0.3 |
1.9 |
1.7 |
0.8 |
1.8 |
2.4 |
2.6 |
|
Brazil |
-3.3 |
1.3 |
1.3 |
1.1 |
2.0 |
2.5 |
2.4 |
|
Mexico |
2.9 |
2.1 |
2.1 |
0.0 |
1.2 |
1.8 |
2.3 |
|
Argentina |
-2.1 |
2.7 |
-2.5 |
-3.1 |
-1.3 |
1.4 |
2.3 |
|
Middle East and North Africa |
5.3 |
1.1 |
0.8 |
0.1 |
2.4 |
2.7 |
2.8 |
|
Saudi Arabia |
1.7 |
-0.7 |
2.4 |
0.4 |
1.9 |
2.2 |
2.4 |
|
Iran |
13.4 |
3.8 |
-4.9 |
-8.7 |
0.0 |
1.0 |
1.0 |
|
Egypt2 |
4.3 |
4.2 |
5.3 |
5.6 |
5.8 |
6.0 |
6.0 |
|
South Asia |
8.1 |
6.7 |
7.1 |
4.9 |
5.5 |
5.9 |
6.0 |
|
India3 |
8.2 |
7.2 |
6.8 |
5.0 |
5.8 |
6.1 |
6.1 |
|
Pakistan2 |
4.6 |
5.2 |
5.5 |
3.3 |
2.4 |
3.0 |
3.9 |
|
Bangladesh2 |
7.1 |
7.3 |
7.9 |
8.1 |
7.2 |
7.3 |
7.3 |
|
Sub-Saharan Africa |
1.3 |
2.7 |
2.6 |
2.4 |
2.9 |
3.1 |
3.3 |
|
Nigeria |
-1.6 |
0.8 |
1.9 |
2.0 |
2.1 |
2.1 |
2.1 |
|
South Africa |
0.4 |
1.4 |
0.8 |
0.4 |
0.9 |
1.3 |
1.5 |
|
Angola |
-2.6 |
-0.1 |
-1.2 |
-0.7 |
1.5 |
2.4 |
3.0 |
|
Memorandum items: |
|
|
|
|
|
|
|
|
Real GDP1 |
|
|
|
|
|
|
|
|
High-income countries |
1.7 |
2.4 |
2.2 |
1.7 |
1.5 |
1.5 |
1.6 |
|
Developing countries |
4.3 |
4.8 |
4.4 |
3.7 |
4.3 |
4.5 |
4.5 |
|
Low-income countries |
5.0 |
5.5 |
5.8 |
5.4 |
5.4 |
5.5 |
5.8 |
|
BRICS |
4.6 |
5.3 |
5.4 |
4.6 |
4.9 |
4.9 |
5.0 |
|
World (2010 PPP weights) |
3.4 |
3.9 |
3.7 |
2.9 |
3.2 |
3.3 |
3.4 |
|
World trade volume4 |
2.6 |
5.9 |
4.0 |
1.4 |
1.9 |
2.5 |
2.8 |
|
Commodity prices5 |
|
|
|
|
|
|
|
|
Oil price |
-15.6 |
23.3 |
29.4 |
-10.3 |
-5.4 |
1.9 |
1.9 |
|
Non-energy commodity price index |
-2.8 |
5.5 |
1.7 |
-4.7 |
0.1 |
1.7 |
1.7 |
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