题干

美国脐橙是一种营养丰富的水果,现被世界各国引进栽培,大多被栽种在丘陵地区山谷中。但北半球冬、春季节微风晴夜出现的近地面逆温现象经常使脐橙遭受冻害。左图为冬、春季节微风晴夜山谷出现的气温分布模型,a、b、c、d代表等温线,且数值a>b>c>d。右图为美国西部某山谷一次超强寒潮过境的微风晴夜测得的不同地形部位气温变化过程曲线。读图,春季山谷地形中通常最早出现植物发芽、开花的地方是(   )

A:甲

B:乙

C:丙

D:丁

上一题 下一题 0.0难度 选择题 更新时间:2019-04-11 09:44:38

答案(点此获取答案解析)

D

同类题5

根据短文内容的理解,选择正确答案。

    I didn't think I had a passion(激情). I would sit in front of the TV all day, thinking about nothing but the next show. It was not long ago that I first learned how important having a passion is to life.

    That day I went with my mum to drive my sister to the gym. I was bored. Then, as my mum stopped at a red light, someone on the side of the road caught my eye(吸引我的世界). It was a man dressed in rags (衣衫褴褛). He was homeless. That didn't interest me, for I had seen many like him before.

    But in some ways he was different. This man was not sitting down with a sad expression(表情). He had a radio in his hand and was dancing happily to the music. The radio seemed to be the most precious(珍贵) thing he had.

    "Mum, why does that man have a radio even thought(尽管) he's homeless?" I asked.

    "He bought it," she replied. I was still unable to understand.

    "But if he's homeless, why doesn't he use the money to buy food or clothes? He wasted it on something he doesn't need."

    "Well, Sarah, sometimes food and clothes aren't the most important things. We need happiness, too."

    The man must care too much about music to buy a radio instead of food clothes. I soon realized(意识到) that happiness is the key to life. Without it, there's nothing to look forward to.

    Since then I've never gone a day without thinking of what's truly important. A home, a meal, clothes—these things are only part of the picture. What's often forgotten is that we all need a pleasure, a light in a dark day. We all need a passion.