题目

Tom is a young man. He has a very big dog and he has a very small car, too. He likes playing tennis. Today he plays tennis for two hours at the club and then he wants to go home by car. His dog comes after him, but it does not jump into the same car. It jumps into the next car. Come here, foolish(愚蠢的) dog! Tom shouts at it, but the dog still stays in the next car. Tom puts his key into the lock（锁）of the car, but the key does not turn（转动）. Then he looks at the car again. It is not his car! He is in the wrong car! And the dog is in the right car! 1. Tom has a big ________.A. 吃腐乳时，外层有一层致密的皮，这层“皮”是由什么形成的 A、毛霉白色菌丝上的孢子囊            B、毛霉白色菌丝 C、毛霉分泌物                        D、豆腐块表面失水后变硬