题目

设P＝{x|x<4}，Q＝{x|x2<4}，则( ) A．P⊆Q                         B．Q⊆P C．P⊆∁RQ                       D．Q⊆∁RP 答案：B [Q＝{x|－2<x<2}，可知B正确．] 阅读下面两篇文章，根据大意，选择正确的选项。 Look! I'm Tom．This is a pencil case．It's orange．It's my pencil case．What's in the pencil case? A ruler is in the pencil case．It's my ruler．The ruler is blue and red．That is a pencil．It's black and white．It's not my pencil．Look! That girl is Lucy．It is her pencil．That boy is Tim．I found his green pen in the lost and found case．I call Tim at 7890003．It's his telephone number． (1) What color is the pencil case? [　　] A． It's orange． B． It's blue and red． C． It's green． (2) I am Tom．That is not my ________． [　　] A． pencil B． pencil case C． ruler (3) ________ has(有)a pencil． [　　] A． Tom B． Lucy C． Tim (4) ________ found the pen in the lost and found case． [　　] A． Tim B． Lucy C． Tom (5) I am Tom．Is my telephone number 7890003? [　　] A． Yes B． OK C． No