— _______ your brother a member of the basketball team?
— No, he_______ like playing basketball.
A:Does; is
B:Do; doesn't
C:Is; doesn't
D:Is; isn't
杨氏____(sì shì) 家禽____(qín qínɡ) 应____(yīnɡ yìnɡ)声
甚____(shèn shènɡ)至 造诣____(zhǐ yì) 为____(wéi wèi)设果
图中①、②两条曲线为我国某河流修建水库前后的流量年变化曲线,据此判断下列叙述正确的是( )
一组数据的最大值为60,最小值为48,且以2为组距,则应分____ 组.
观察下列等式 11×2 =1﹣ 12 , 12×3 = 12 ﹣ 13 , 13×4 = 13 ﹣ 14 ,将以上三个等式两边分别相加得: 11×2 + 12×3 + 13×4 =1﹣ 12 + 12 ﹣ 13 + 13 ﹣ 14 =1﹣ 14 = 34 .