请教987大全531

1.                             New techniques in thermal-scanning photography, a process that records radiation from surface areas, makes it possible to study the effects of calefaction, or warming, of a river in greater detail than ever before.

(A) makes it possible to study the effects of calefaction, or warming, of a river in greater detail than ever before

(B) make it possible to study, in greater detail, the effects of calefaction, or warming, of a river than ever before

(C) have made it possible to study in greater detail than ever before the effects of calefaction, or warming, of a river

(D) make possible the study of the effects of calefaction, or warming, of a river in greater detail than it ever was before（C）

(E) has made it more possible than ever before to study in greater detail the effects of calefaction, or warming, of a river

请问b答案除了时态之外还有别的错误吗？

in greater detail得位置对句子含义有影响吗？

btw：possible做比较极是习惯用法不用more吗？还是有其他考点呢？

可能问题问得很弱：）

不过还是请大家指教～～

先谢谢啦

D里面make possible为什么错？可不可以把 make possible sth.理解成倒装结构？

ever before能不能成为句子要使用完成时的标志？

请牛牛赐教！