16. 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 (E) has made it more possible than ever before to study in greater detail the effects of calefaction, or warming, of a river
ANSWER C. What is wrong with B? 想請問一下 從哪一句話 可以判斷出 要用現在完成式 ??? 謝謝
[此贴子已经被作者于2006-11-2 19:49:33编辑过] |