问题
选择题
.I want to buy a rope which is _____________this one.
A．twice as longer as
B．as twice long as
C．twice the length of
D．as twice as
答案
答案：C
考查倍数。倍数的表达有：倍数 + as + 形容词或副词的原级 + as + 其他；倍数 + 形容词（或副词）的比较级 + than + 其他；倍数 + the size / height / length / width. etc. + of + 其他。故选C。