47. What do the underlined words “pack out what you pack in” in Paragraph 4 probably mean?
A. keep every out of campgrounds
B. take away everything you bring in
C. carry all the necessary food
D. look after your personal belongings
48. Why were some deer killed on purpose at Grand Canyon?
A. They ate wrong things and became very ill.
B. They were a danger to other gentle animals.
C. They begged food from visitors.
D. They kicked and bit visitors.
49. What is the main purpose of the text?
A. To provide travel information B. To report some recent news.
C. To teach tourists hiking skills D. To introduce the wild life
B篇
The Queen’s English is now sounding less upper-class, a scientific study of the Queen’s Christmas broadcasts had found. Researchers have studied each of her messages to the Commonwealth countries since 1952 to find out the change in her pronunciation from the noble Upper Received to the Standard Received.
Jonathan Harrington, a professor at Germany’s University of Munich, wanted to discover whether accent (口音) changers recorded over the past half century would take place within one person. “As far as I know, there just is nobody else for whom there is this sort of broadcast records,” he said.
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