The falling tone is commonly used in the following sentences except.
A. declarative sentences
B. general questions
C. special questions
D. exclamatory sentences
The rising tone indicates basically lack of definiteness and incompleteness.
A. 对
B. 错
The falling-rising tone is rarely used in English and conveys no special meaning.
A. 对
B. 错
What goods do people usually buy?
A. Only the goods they want.
B. Only cheap goods.
C. Goods that are familiar to them.
D. Goods that seldom appear in ads.
微信支付 
支付宝支付