If a book costs 15 dollars, how much can one save with the discount？
A. $2
B. $1. 5
C. $4
D. $3
Which of the following may NOT be bought in Highwoods Book City？
A. Maps and newspapers
B. Fashion magazines
C. Health books
D. Short novels
A．could forceB．could have forcedC．could be forcedD．could have been forced
A. could force
B. could have forced
C. could be forced
D. could have been forced
What is Zhao's attitude toward climate change？
A. It is mainly an issue of CO2 emission reduction.
B. It is a challenge involving no cultural issues.
C. It is linked closely with population.
D. It is the responsibility of the developed countries to solve it.
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