德州市某学校的地理兴趣小组分别在一年中春分、夏至、秋分、冬至四个节气当天正午时刻测量学校旗杆影子长度，并运用地图的有关知识绘制了左图和右图。完成下面小题。

如图是某条河流的剖面图，一般面对河流下游，左手方视为左岸，右手方视为右岸．据此判断该河流位于（　　）

综合问答﹣﹣海洋游乐场中的物理：

下列是小雨在春暖花开时胶游中的几个场景，请你挑选2个，用所学的物理知识进行解释：

①走在路上，闻到路旁的花香比半个月前浓烈得多；②他将竹竿插入水中，看到竹竿水中的部分向上“弯折”了；③看见园林师傅用钳子剪断铁丝固定倾斜的树干时，将铁管套在钳柄上，紧握铁管用力，较轻松地剪断铁丝；④中午吃烤肉时，看见电烤箱内的电炉丝热得发红，而与它相连的导线却不怎么热．

（1）解释场景： ____

根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

Dear Mike,

    How are you? I have a good time at my new 1 in Beijing, China. Here, I'm good 2 my teachers and classmates. They all like me and I also like 3. At school my favorite 4 are Chinese and music. And I 5 two clubs, the Chinese club and the music club. In the music club, I have a good friend. Her 6 is Yang Peiyi. She likes music. She 7 well. She can also play the piano and the violin. She says she wants to be a 8. Yang Peiyi likes 9, too. On weekends she often plays tennis or ping-pong with me. Do you want to know her? Look! Here is a 10 of her. I think you'll like her.

                                                                                                                                                                       Yours,

                                                                                                                                                                       Maria

依次填入下面横线处的语句，与上下文衔接最恰当的一组是（     ）
但是，就在秦始皇下令修长城的数十年前，四川平原上已经完成了一个了不起的工程。       ，       。       ，       。       ，       。有了它，旱涝无常的四川平原成了天府，每当我们民族有了重大灾难，天府之国总是沉着地提供庇护和濡养。
①长城占据了辽阔的空间
②而它至今还在为无数民众输送汩汩清泉
③它的规模从表面上看远不如长城宏大
④却注定要稳稳当当地造福千年
⑤长城的社会功用早已废弛
⑥它却实实在在地占据了邈远的时间