若x的相反数是3,|y|=5,则x+y的值为____ .
圆的周长是和它半径相同的半圆的周长的2倍(判断对错).
A. Hello, Alice. B. I can play cards C. No
—Hello, Ben.
— ____
—Can you play football?
— ____, I can play cards.
—Oh, ____, too.