凭栏听雨〔1000×(1+ x %) – 400×(1+5%) – 500×(1+6 %) – 100〕÷ 100 = 5.5
x = 60 % （第二步做对3分）。
（注：也可以使用教材164页的公式计算，结果是一样的。）
V. Answer the following question in details.( 15 for each, totally 30) 1. (15) Describing the impacts of decreasing tariff rates on China ?
1. Decreasing the prices of imported goods and increasing consumer 2. 3. 4. 5.
surplus.
Decreasing the prices of imported media goods and decreasing the product’s costs domestically.
Decreasing the prices of imported technology. Decreasing the trade friction with others.
Producing pressures on domestic industries and unemployment.
2. (15) Describing the impacts of TBT（技术性贸易壁垒）on the Chinese exporting firms ? ( negative and positive )
The negative impacts include two parts.
a) it is impossible for Chinese products to come into foreign markets.
b) TBT increased the costs of exporting products, and decreased the competition of Chinese products.
The positive impacts include : it is useful for our firms to improve technology , industry structures, and increase “green consumption” ideas.
