【单选题】对下列英语句子的英文翻译哪一项是错误的?
A.
It poses a challenge to seniors. 它对老年人提出了挑战。
B.
It saves both time and money. 它节省了时间和金钱。
C.
It is childish and unprofessional. 它幼稚而且不正规。
D.
It is cool and convenient. 它很酷而且方便。
【单选题】Will you please say it again? I quite you.
【单选题】某气态烃 CxHy 1mol 完全燃烧需要氧气 5mol ,则 x 和 y 之和应为
【多选题】以下哪些项是属于物质对X射线发生真吸收的现象?
【判断题】当建筑物的基础类型不同,以及分期建造房屋毗邻处,需要设置伸缩缝。
【单选题】若1mol某气态烃C x H y 完全燃烧,需用5mol O 2 ,则( )
【单选题】Will you please say it again? I quite______you.
【单选题】Will you please say it again? I_____ quite_____ you.
【单选题】— _____ Will you please say it again? —Sure. I said that they were going shopping. [ ]