问题
选择题
地球自转产生了（ ）
A．昼夜现象
B．昼夜交替现象
C．极昼极夜现象
D．太阳直射点的季节移动
答案
B
地球只公转，不自转也能产生昼夜现象。极昼极夜现象、太阳直射点的季节移动都是由于黄赤交角的存在，地球在绕日公转的过程中产生的自然现象。只有昼夜交替现象才是由于地球自转产生的。
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地球自转产生了（ ）
A．昼夜现象
B．昼夜交替现象
C．极昼极夜现象
D．太阳直射点的季节移动
B
地球只公转，不自转也能产生昼夜现象。极昼极夜现象、太阳直射点的季节移动都是由于黄赤交角的存在，地球在绕日公转的过程中产生的自然现象。只有昼夜交替现象才是由于地球自转产生的。
For years I wanted a flower garden. I would spend hours thinking of the different things I could that would look nice together. But then I had five lovely children: Matthew and Marvin, the twins Alisa and Alan, and then Helen. I was too raising them to grow a garden. Money was tight (紧的) ，as well as time. When my children were little, if they wanted something that too much I’d have to say, “Do you see a money outside? Money doesn’t grow on trees, you know.” Finally, all five got through high school and college, and started living on their own. And I started thinking again about having a . One spring morning, on Mother’s Day, I the window and was surprised to see a new tree in my yard. I put my glasses on and I couldn’t believe what I was looking at. There was a money tree in my yard! I went outside to look. It was true! There was as much as one hundred on that tree. All I could think of was all the garden flowers I could with that money! There was also a(an) attached(附上): “ Love, Marvin.” My other had bought me tools, ornaments(装饰物) and gardening books. That was three years ago. My garden is now very , just the way I wanted. I’m still not sure whether money on trees. But I know love does!
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