问题
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5,10,1 7,28.()A.47B.56C.34D.45
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5,10,(),34,65,130 A.15 B.16 C.17 D.18
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1977年世界石油总产量是()亿吨。 A.4.6 B.29.5 C.34.1 D.10.7
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(3/4+1/5)+(4/5+1/6)+(5/6+1/7)+(6/7+1/8)+(7/8+1/9)+(8/9+1/10)=()。A.6.05B.5.65C.5.35D.5.05
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95,5.83,15.71,34.59,()A.64.57B.66.67C.65.57D.65.47
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5 10 () 34 65 130A.15B.16C.17D.18