题干

如图所示,A、B为两游泳运动员隔着水流湍急的河流站在两岸边,图中虚线是A B位置的连线,A在较下游的位置,且A的游泳成绩比B好,现让两人同时下水游泳,要求两人尽快在河中相遇,试问应采用下列哪种方法才能实现(   )

A:A、B均向对方游(即沿虚线方向)

B:B沿虚线向A游且A沿虚线偏向上游方向游

C:A沿虚线向B游且B沿虚线偏向上游方向游

D:都应沿虚线偏向下游方向,且B比A更偏向下游

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A

同类题3

    There is a famous English saying "You are what you eat", and it means what you put in your mouth will become part of you. Many experts(专家) use it to tell people it's important to have a good eating habit. For example, too much sweet food makes a person overweight. To avoid being fat, kids are told to keep off sweet food. However, a team of American scientists have discovered something new about eating sweet food.
"When we say some people 'sweet', we mean they are kind and friendly to us. Perhaps this word can help us learn more about people's feelings and acts." said Brian Meier, a scientist from the study team. "Taste is something we experience every day. What we have done is to find whether we can know someone's character and behavior depending on their taste."
    In one of their experiments, college students were asked questions about their character- whether, for example, they were soft-hearted or not. Then they were asked to make a list of their favorite food. According to their answers, the scientists found that the students who liked sweet  food were nicer.
    In their another experiment, the scientists found that people who preferred sweet food such as cookies and chocolate were more willing to help other people in need, and those who ate non-sweet food such as chips weren't. For example, people with a sweet tooth were more likely to volunteer to clean up their city, visit sick children in the hospital and so on.
    The result of the experiments is that people's helpfulness or being nice has something to do with their taste for sweet food. So eating sweet food is a useful way to make people nice and helpful. Next time, try some ice-cream.