Our school has an absolute _______ over others, for we have the most hardworking teachers and students.
A. profit B. benefit C. advantage D. effect
So suddenly ________that the animals in the zoo looked very frightened during the total solar eclipse (日全食)．
A. did the sky turn dark B. the sky did turn dark
C. turned the sky dark D. was the sky turned dark
Today，we’ll discuss a number of cases ________ parents have much difficulty in communicating with their children.
A. which B. as C. why D. where
Chinese smartphone maker Xiaomi Corp said____ it sold 18.7 million smartphones in 2013, up 160 percent year-on-year, and _____ it officially expanded to Singapore ____Jan 1, in a bid to enter the global market.
A. that, that, in B. 不填, 不填, on
C. that, 不填, in D. 不填, that ,on
China's icebreaker Xuelong ______ by heavy floes since Friday after rescuing passengers on a Russian vessel stranded in Antarctica.
A. has been trapped B. had been trapped
C. has trapped D. was trapped
The sign _____ “In case of _______ fire, break the glass and press _______ red button.”
A．reads,不填；the B．writes,不填；the
C．reads, the; the D．writes, a; a
