问题
选择题
Swimming is __________ diving.
A．more dangerous as
B．not as dangerous as
C．not as more dangerous as
D．not more dangerous as
答案
答案：B
题目分析：句意：游泳不如潜水危险。分析：as……as与……一样；而not as(so)…….as不如…….。中间接形容词或者副词的原级。分析选项只有第二项符合题意。故选 B
