3.酚比碳酸的酸性弱，将二氧化碳气体通入苯酚钠溶液，苯酚即可游离出来。
A. 对
B. 错
What is Mrs. Brown unsatisfied with? ________
A. The soup
B. The waitress’ service.
C. The itinerary
D. The hotel.
How does Wang Hui handle Mrs. Brown’s complaints? ________
A. Tells the chef.
B. Tells the manager of the restaurant.
C. Tells the waitress.
D. Replaces it by herself.
Which of the following is NOT Mr. Brown’s complaint? ________
A. Wang Hui was walking a little too fast.
B. Little time was left for the tourists to enjoy the scenery.
C. Wang Hui spoke too loud at the scenic sites.
D. Wang Hui’s voice was too low at the scenic sites.
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