问题
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Q3 21, 20, 18, 15, 11, ?
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7, 4, 14, 8, 21, 16,______,______ () A.20,18 B.28,32 C.20,32 D.28,64
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1,3/4,9/5,7/16,25/9,______ () A.15/38 B.11/36 C.14/27 D.18/29
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In the United States, the legal smoking age is______.A.16B.18C.20D.21
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In the United States, the legal drinking age is______.A.16B.18C.20D.21
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下面程序的输出结果是______。main(){ int a[3][4]={1 3 5 7 9 11 13 15 17 19 21 23};int(*p)[4]