—Hello, Jenny. I'm doing my homework. The sums are very ____.
—Let me see. The sums are easy. Let me help you.
人在恐惧、紧张时,在内脏神经的支配下,肾上腺髓质释放的肾上腺素增多,该激素可用于心脏,使心率加快。下列叙述错误的是
判断对错.
A比B多10%,不同于B比A少10%.