这道题已经答过了阿
倍数表达
A is n times as great(long,much,…)as B.(①)
A is n times greater (longer,more,…)than B.(②)
A is n times the size (length,amount,…)of B.(③)
以上三句都应译为;A的大小(长度,数量,……)是B的n倍[或A比日大(长,多,……)n-1倍].例如:
This book is three times as long as (three times longer than,three times the length of )that one,
这本书的篇幅是那本书的3倍(即长两倍).
所以根据倍数的表达方式,只有b项正确