{$mediaurl}Why did Ernie get a low grade on the last test A. He does not understand the material. B. He is not a very good student. C. He did not have time to finish it. D. He was in a hurry to leave the class. 参考答案:C 答案解析:[解析] Why did Ernie get a low grade on the last test He did not have time to finish it.
第31题: [多项选择]下列哪些调之间是等音调关系( ) A. 以#G为商的宫调式与bB为角的宫调式 B. bA商与#G 羽 C. 以#A为Ⅱ级的和声小调和以ba为主音的和声小调 D. bd自然小调与#C大调 参考答案:A,C
第32题: [单项选择]下面是关于两片8237级联构成主从式DMA控制器的叙述,其中正确的是( )。 A. 从片的HRQ端和主片的HRQ端相连,从片的HLDA端和主片的HLDA端相连 B. 从片的DACK端和主片的DACK端相连,从片的DREQ端和主片的DREQ端相连 C. 从片的HRQ端和主片的DACK端相连,从片的HLDA端和主片的DREQ端相连 D. 从片的HRQ端和主片的DREQ端相连,从片的HLDA端和主片的DACK端相连 参考答案:D