题目

—Simon has been________ school for 2 days. What's wrong with him?—It's said that he has a cold.A. nervous about B. thirsty for C. absent from D. worried about 答案：【答案】C【解析】句意：——西蒙已经两天没有来学校上课了，他怎么了?——据说他感冒了。考查形容词短语。be nervous about表示对……感到紧张；be thirsty for表示渴望；be absent from表示缺席；be worried about表示担心。根据题干中What's wrong with him?以及It's said that he has a cold.可知西蒙已经两天没有来学校上在生态系统中，动物一般是消费者，但也有少数动物在生态系统中相当于分解者，例如（ ）A．狗 B．兔 C．蝗虫 D．蚯蚓