<{table}> <{colgroup}><{col}> <{/colgroup}><{tbody}><{tr}> <{td}>砂砾石地基灌浆，要求浆液结石的28d强度为（）。<{/td}> <{/tr}><{/tbody}><{/table}>

【单选题】
A <{table}> <{colgroup}><{col}> <{/colgroup}><{tbody}><{tr}> <{td}>(4～5)×10<{sup}>5<{/sup}>Pa<{/td}> <{/tr}><{/tbody}><{/table}>
B <{table}> <{colgroup}><{col}> <{/colgroup}><{tbody}><{tr}> <{td}>(5～6)×10<{sup}>5<{/sup}>Pa<{/td}> <{/tr}><{/tbody}><{/table}>
C <{table}> <{colgroup}><{col}> <{/colgroup}><{tbody}><{tr}> <{td}>(6～7)×10<{sup}>5<{/sup}>Pa<{/td}> <{/tr}><{/tbody}><{/table}>
D <{table}> <{colgroup}><{col}> <{/colgroup}><{tbody}><{tr}> <{td}>(7～8)×10<{sup}>5<{/sup}>Pa<{/td}> <{/tr}><{/tbody}><{/table}>

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