53 (   ),

18. They have produced (   ) they did last year. 

• A、 twice as much grain as

• B、 twice more grain as

• C、twice as many grain as

• D、 as twice many grain as

38. According to the passage all of the following are necessary in the Chinese partings except (   ). 

• A、seeing the guests off to the farthest point

• B、 protesting again and again

• C、 running after the guests

• D、saying"Go slowly"