45. What does the phrase “green shoots” mean in “Green shoots have begun to appear in different markets”?
　　A. Change in policy. B. High prices.
　　C. Environmental protection. D. Signs of recovery.
　　46. Fill in the blank in the sentence “I can’t believe this is Joshua — he’s ________ since we last met!”
　　A. shot out B. shot up C. shot through D. shot down
　　47. When you are talking about unimportant things, we say you are ________.
　　A. shooting the breeze B. shooting yourself in the foot
　　C. shooting your mouth off D. shooting questions at somebody
　　48. Choose a word to complete the sentence “The ________, which killed a policeman and wounded a passer-by, was reported to have lasted only 13 seconds.”
　　A. shooter B. shoot C. shooting D. shot