John and I ______ friends for eight years. We first went to know each other at a Christmas party. But we ______ each other a couple of times before that. A had been; have seenB have been; have seenC had been; had seenD have been; had seen
John and I ______ friends for eight years. We first went to know each other at a Christmas party. But we ______ each other a couple of times before that.
A had been; have seen
B have been; have seen
C had been; had seen
D have been; had seen
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—Hurry up! We ________ for you at the gate. 学科网 —I’m sorry .I’m coming soon.学科 —Hurry up! We ________ for you at the gate.—I’m sorry .I’m coming soon.A. waits B. waited C. are waiting
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当R－EACH采用基本接入模式的时候,对于接入前缀和接入消息的承载信道错误的是:() A.R-ACH，R-EACHB.R-EACH，R-ACHC.R-EACH，R-EACHD.R-EACH，R-CCCH
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1、针对下列程序段，需要（）个测试用例才可以满足语句覆盖的要求。 switch （value ) { case 0: other = 30; break; case 1: other = 50; break; case 2: other = 300; case 3: other = other/value; break; default: other = other * value; }A．2B．3C．4D．5
关于成本路径的输出类型，下列说法不正确的是（）A．输出类型可以是EACH_CELL。B．输出类型可以是EACH_ZONE。C．输出类型可以是BEST_SINGLE。D．输出类型可以是EACH_SINGLE。
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