A:虚像也可以用光屏承接
B:虚像一定是放大的
C:实像能用光屏承接
D:实像可以是放大的,也可以是缩小的
已知a,b,c是不为0的实数,且aba+b=13,bcb+c=14,cac+a=15,那么abcab+bc+ca的值是____ .
根据文章意思,正确排序。
①Yes, we have a new music teacher.
②Do you like her?
③Is she old?
④Do you have new teachers?
⑤ No, she isn’t. She is funny.
⑥Yes, we all like her.
____
此地一为别,____。(李白《送友人》)