电信接入网位于本地程控交换机（LE）和用户驻地网之间，它由（）来定界的。 A: RP B: Q3、UNI、SNI C: UNI、SNI D: SNI、RP、UNI、Q3

下列哪个语句可以实现删除“学生”表的“姓名”字段所建立名为“UNI”的数据完整性约束的功能，该约束用于保证“姓名”字段取值不出现重复值（ ）。 A: ALTER TABLE学生DROP UNI; B: ALTER TABLE 学生 DROP INDEX UNI; C: ALTER TABLE 学生 DELETE INDEX UNI; D: DROP UNI;

Would you please _____ to Tom?: pass|pass it on|pass on|pass on it

He speaks French well enough to _____ a French man. A: pass for B: pass on C: pass out D: pass to

I think this kind of cloth can ______ silk. A: pass over B: pass out C: pass by D: pass for

下面哪个短语里的pass是“去世”的意思？ A: pass away B: pass by C: pass on

On entering another country, a tourist will have to ______ the Customs. A: pass through B: pass by C: pass over D: D. pass for

Unless you work hard you ______ your test. A: will pass B: will not pass C: would pass D: would not pass

I wish I______yesterday' exam. A: can pass B: pass C: were able to pass D: had been able to pass

Listening to music is one of my favorite ways to ________. A: pass the time B: pass a time C: pass time D: pass times