There’s a certain humanity in dogs. They always seem to have your best intentions in mind, theyalways look __(66)__ , and, even if you can’t necessarily prove it, you swear they can tell__ (67)__ having a bad day. They also have a human tick: the head tilt. What exactly does it mean? __(68)__ Mental Floss, there are several explanations, none of which include “they’re trying to get rid ofswimmer’s ear.” There appear to be benefits to the move, part visual and part auditory. The canine earis incredibly sensitive, capable of picking up a far wider range of frequencies __(69)__ humans.Their sharp sense of hearing can pick up the most minuscule undulations in frequency, and theirhead-positioning makes a world of difference. The head tilt __(70)__ them to position their pinnae,the outer part of the ear, so they can locate the source of the sound better.
【題組】66.
(A) enthuse
(B) enthusiast
(C) enthusiasm
(D) enthusiastic