问题
选择题
Using his hybrid rice, farmers are producing harvests before.
A．as twice large as
B．twice large than
C．larger than twice
D．twice as large as
答案
答案：D
考查倍数的表达方式。句型为A is 倍数 as adj as B或者A is 倍数 adj比较级 than B
对照此句型可知