第一题这个E选项错误要跟D比较才能看出来:
(D) interior and most rapidly travel through cold, dense regions, and slower
(E) interior and that travel most rapidly through cold, dense regions and slower
注意到两个选项后不不一样了吗?
D中是most rapidly travel though cold, dense regions 和 slower (travel) through hot rocks并列, 这里是不是应该用more slowly?
E中是cold, dense regions 和 slower through hot rocks并列,直接改变了逻辑意思
用相同的道理也可以排除A,这才是有效的Decision Points。