2. 外语
  3. Every morning, when I drive past the street corner, I can always see the big sign standing outside the gas station. The sign lis

Every morning, when I drive past the street corner, I can always see the big sign standing outside the gas station. The sign lis

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问题     Every morning, when I drive past the street corner, I can always see the big sign standing outside the gas station. The sign lists the price of gasoline per gallon. However, in the past few months, the number never seemed to【B1】______. My family, school mates and co-workers have all been complaining about this【B2】______ issue.
    The car is one of the most【B3】______ means of transportation in southern Californi- a; people even say, "We can not live without cars! "
    According to scientific predictions, we will【B4】______ gasoline in 50 years. People will not be able to drive cars, take planes or even sail ships. When the time comes, hardly anything will【B5】______normally.
    In this case, governments will have to provide【B6】______ to research departments to develop new forms of energy on which cars can run.
    One idea, for example, is that people in California will be able to drive solar-powered cars since it is【B7】______ sunny most of the time.
    In other states, there are people developing new forms of fuel involving alcohol【B8】______ gasoline or new combinations like gasoline plus corn oil.
    Who knows what forms of new energy people will be using in the future? Without problems【B9】______, there will be no new solutions. Society needs to move forward. Sometimes, we need these【B10】______to motivate us to achieve great things.
【B2】
选项
答案serious
解析 根据空格前的this和空格后的名词issue可知，此空需要修饰issue的词。serious“严重的”。
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