以下是几种食物的近似pH,其中呈碱性的是( )
A:苹果汁(2.9~3.3)
B:葡萄汁(3.5~4.5)
C:牛 奶(6.3~6.6)
D:鸡蛋清(7.6~8.0)
绝对值不大于4的整数的积是( )
请判断下列问题中,哪些是反比例函数,并说明你的依据.
A.Where did you go over the winter holiday?
B.How tall are you?
C.Did you see a film last night?
D.You didn't come to school. What happened?
E.Are you all right?
⑴____ ⑵____ ⑶____ ⑷____ ⑸____
“友谊需要忠诚去播种、原则去培养、谅解去护理、热情去灌溉。”这句话是说( )
①与朋友交往要真诚 ②与朋友交往要热情
③交往要坚持立场和原则 ④朋友之间要互谅互让