【多选题】必需氨基酸是指体内不能合成或合成量不足而必须由食物中供给的氨基酸。下列属于必需氨基酸的是 ( )
【简答题】读短文,选答案。 Hello, my name is Amy. I get up at six forty. I have breakfast at 7: 10. And then I go to school. I have four classes in the morning and two classes in the afternoon. I have lunch in the cant...
【单选题】听力原文:W: What time shall we leave? M: Well, I can't leave before 10. I have a lot of work to do. You'd better go first. Q: When will the man leave? (12)
A.
He won't leave until 10.
B.
He'd better leave now.
D.
He'd better not leave now.
【简答题】How old was I? I can’t remember. Maybe I was only 10. It was the first 16 without my father because he was away for something. He left me to fill that sad place in my mother’s heart. It was the Christ...
【单选题】一对标准安装的渐开线标准直齿圆柱齿轮外啮合传动,当中心距增大1mm时,下列各值与标准安装时相比没发生变化的是。
【多选题】某工厂2008年工业产值为2000万元,2016年产值比2008年增长了85%,则( )
【单选题】The next morning I found everything _______with snow,
【多选题】某工厂2008年工业产值为2000万元,2016年产值比2008年增长了85%,则( )