单项选择题
Roads in this mountain area used to be（）；people found it hard to travel here.
A.in poor conditionsB.in the poor conditionC.in poor conditionD.in a poor condition
单项选择题 On May 30th, 2010, at（）World Table Tennis Championship, Ma Lin and Zhang Joke won the gold medal in men’s with（）score of 3:1.
单项选择题 （）from space，the earth，with water（）seventy percent of its percentage，looks like a “blue ball.”
单项选择题 Though the book is a little expensive，it is（）.
