Sound travels ______ air ______ a speed of about 340 metres per second.
A．over; in B．through; at C．by; at D．through; over
We knew little about Shu-How Lin, a basketball player from New York Knicks, __________ we watched the basketball matches in NBA.
A. until B. if C. when D. because
The book written by Mo Yan is worth ______ a second time.
A．to read B．to be read C．reading D．being read
He didn’t listen to the teacher carefully in class. ______, he couldn’t pass the exam.
A．Even though B．As a result C．Instead D．In order to
Teacher Wang recommended me a few foreign movies, but ______was to my taste.
A．all B．neither C．some D．none
Although it seemed to be ______ uncomfortable experience, he still found it ______ fun to learn diving.
A．an; / B．/; a C．a; the D．an; a
