IV.綜合測驗：下篇短文共有5個空格，為第26至30題。
      Most of Ig Nobel research and inventions are entertaining. However, some of them are   (26)      useful   (26)      amusing. For instance, Catherine Douglas and Peter Rowlinson proved that having a friendlier relationship with humans help cows   (27)      more milk.   (28)     example is about taking photographs. Most people have a hard time   (29)     a blink-free group photo. Luckily, two people found a solution: When the number of people in a group is less than twenty, divide the number   (30)     three and the answer is the number of shots needed. Do these sound interesting? Try to do some research, and you could be a potential winner of an Ig Nobel Prize.
【題組】26.
(A) such…as
(B) so…as
(C) less…than
(D) more…than