专四专八考试

Themillionsofcalculationsinvolved,______

来源:网考网专四专八 所有评论

【单选题】The millions of calculations involved, ______ by hand, would have lost all practical value by the time they were finished.


A.had they been done
B.they had been done
C.having been done
D.they were done


网考网参考答案:A
网考网解析:

虚拟语气题。这是一句虚拟语气的句子,条件句使用了省略if的倒装句形式,动作与过去事实相反。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>

相关推荐

发布评论 查看全部评论