在酿酒、面包制作过程中，需要利用的真菌是____ ；某些真菌能够产生一些杀死致病细菌的物质，这种物质叫做____ ．

    Do you kow that animals have love for each other and their children just like us humans? Let me tell you some moving stories of great animal parents.
    Several years ago a heavy rain hit a town and made the river go up. When the rain stopped, people found that a dog swam to an island in the river twice a day for two weeks. Why did she do so? Her four children were there. The mother swam there every day to feed her babies. This true story moved many people.
    Another story is about chimpanzees(猩猩). A scientist named Jane Goodall spent 4 years living with chimpanzees in Africa. She found that chimpanzees also cared for those that were hurt or got lost. “It is not only humans who have duties, animals also do,” she said.
    Two birds in Chengdu also showed their parental(父母的) love. Their baby was hurt and fell on the street in the center of the city. Cars were driving past but the brave parents rushed down to the road and took the little bird away with their claws(爪子).

下列有关生物多样性的观念中，不恰当的是（）