题干

2004年世界石油市场风起云涌,石油价格持续走高。对右图的石油价格走向的理解正确的是

A:由A到B阶段,石油严重短缺石油价格

B:由B到C阶段,石油的需求量没有增加

C:由C到D阶段,石油供不应求
B C D

D:由A到B阶段,石油的需求量与石油的价格成反比

上一题 下一题 0.0难度 选择题 更新时间:2019-06-02 10:02:30

答案(点此获取答案解析)

A

同类题2

Every day, life is made and lost. Every day, life goes on. Every day we experience some of the most important parts of life and may not even realize it: love, generosity, and perseverance. These values aren't just important to us, they make the world what it is.
Scientists say that the gravity makes the world turn, but some people say that love makes  it  go around. Love can be found anywhere: in families, friends, even strangers. Even if you can't see it, you know it's there.
Love may connect people all over the world, but what would the world be without generosity? Whether after a national disaster or a school fund raiser, one thing is certain--- it is better to give than to receive. Generosity is found everywhere and whether it's a large or small act, it makes a difference. Most of all, generosity is not something you need any qualifications(资格)for, and no matter what you do, it can make a difference. Sometimes, though, it takes effort to be generous, which leads us to perseverance.
Founding a country, riding a bike, or finishing a novel, these are all finished with perseverance. Perseverance is the one thing that can help us achieve whatever we want. It is what helps scientists discover cures for illnesses, and athletes become winners. You may fail, but every time you make a mistake, that's one less to make the next time.
There is an infinite(无限的) number of things we value. But without love, generosity, and perseverance, we just don't think that our lives or the world would be the way it is.