题目内容

【题目】当太阳直射在北回归线上时,下列说法正确的是 ( )

A.南半球的澳大利亚此时已是冬季B.我国北方的河流都已经结冰

C.南极地区出现极昼现象D.哈尔滨比广州的白昼短

【答案】A

【解析】

地球围绕太阳公转时,地轴与公转轨道的平面成66.5°的固定倾角,这就使得一年内太阳光线的直射点有规律地在南北回归线之间移动。当太阳光线直射赤道时是北半球的春分日或秋分日;当太阳光线直射北回归线时是北半球的夏至日;当太阳光线直射南回归线时是北半球的冬至日。

当太阳直射在北回归线上时,为北半球的夏至日,北半球处于夏季,南半球的澳大利亚为冬季,我国位于北半球,此时河流不会结冰,哈尔滨昼长夜短,北极地区出现极昼,南极地区出现极夜现象。哈尔滨白昼比广州长,故选:A

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【题目】Collecting coins in my hobby, and it has brought me a lot of fun. Now I share the hobby ________ my children. Getting children interested in coin collecting ________ easy. Here are four ways I have used to get my kids ________.

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“This is what happening now. You are listening to my speech in my dream park,” said the speaker. “I told you this story in order to make you know one thing: follow your heart, keep your dream and never let others destroy your dream.”

When the students were leaving the park, their teacher went over to the speaker. “Thank you, Mr. Black. I think my students have learned a lot from your speech. Here I have to say sorry to you. Some years ago, I was once a dream stealer and stole a lot of students’ dreams, including yours. But you didn’t give your dream up because of me,” she said and then left.

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