A. ""是空串," "空格串 B. "BEIJING"是"BEI JING"的子串 C. "something"<"Somethig" D. "BIT"="BITE"
A.20% B.40% C.50% D.33.3%
A.2 B.3 C.4 D.5
A."I AM" B."I AM A SDUDENT" C."IAMASDUDENT" D. "A SDUDENT"
A.0 B.1 C.2 D.3