【单选题】I have heard________ children tell me that they want to be doctors when they grow up.
【单选题】I have heard children tell me that they want to be doctors when they grow up.
【单选题】I have heard________ children tell me that they want to be doctors when they grow up.
【简答题】Listen again to the above sentences rearranged in sequence, and then match them with their Chinese translation. 1)( ) a. 我想买一件白衬衫。 2)( ) b. 你穿多大号的? 3)( ) c. 多少钱? 4)( ) d. 你想买什么...
【简答题】一台数控铣床,开机后发现系统没有压力,试分析其产生的原因并提出解决措施。
【判断题】兰科植物的雄蕊和雌蕊联合形成合蕊柱,花粉结合为花粉块。
【单选题】I have heard _____ children tell me that they want to be doctors when they grow up.
【单选题】I have heard_______children tell me that they want to be doctors when they grow up.