Why was the hostess so excited that she gave the Chinese scholar a big hug?
A. He knew the difference between "look" and "is" to compliment her.
B. He complimented her not because of her eye-catching red color dress.
C. He corrected his grammar mistake when he greeted her.
D. He learned to compliment her.
Why would the hostess wear colorful dress?
A. Because she would feel good.
Because she would look younger.
C. Because American culture cherish young people more than elder people.
D. Because she was not wealthy.
为了更好的对管网进行监测，通常需要对管网的（ ）、（ ）进行测定。
微信支付 
支付宝支付