一个两位数，十位数字是x，个位数字是y，如果把它们的位置交换得到的数是[ ]
A．y+x
B．yx
C．10y+x
D．10x+y
答案：C
Choose the right answer to fill in the blanks. （看图完成句子。）
A. Thank you.
B. Good morning.
C. Nice to meet you, too
D. Where are you from?
A: Good morning.
B: 1_________________________.
A: This is my friend, Nancy.
B: Nice to meet you.
C: 2_________________________.
B: 3_________________________?
C: I am from the USA.
B: Welcome to our school!
C: 4_________________________.
递延资产的实质属于（）。
A.资产
B.费用
C.负债
D.支出
