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读下图“沿北纬32°线我国地形剖面图，完成下列要求

（1）图中字母表示的范围，分别代表我国地势的阶梯等级是：

A代表地势第______级阶梯，B代表地势第______级阶梯，C代表地势第______级阶梯．

（2）图中序号代表的是：

①______高原，②______山脉，③______盆地，④______平原，⑤______海．

答案

（1）由北纬32°地形剖面图上可以看出，我国地势西高东低，呈三级阶梯状分布，A海拔4000米以上为第一阶梯，B海拔1000-2000米为第二阶梯，C海拔500米以下为第三阶梯；

（2）北纬32°自西向东依次穿过青藏高原、横断山、四川盆地、长江中下游平原、黄海；

故答案为：（1）一；二；三；   （2）青藏高原；横断山；四川盆地；长江中下游平原；黄海．

填空题

为测定空气里氧气的含量，甲、乙、丙三个同学用如图所示的装置分别进行了实验探究。

（1）甲同学：点燃红磷立即伸入瓶中并塞上瓶塞。待红磷燃烧停止并冷却后，打开止水夹，观察到集气瓶中吸入水的体积约占集气瓶容积的        。

（2）乙同学：用碳替代红磷，完成上述实验，发现集气瓶内并没有吸入水，其原因是                                        。

（3）丙同学：向集气瓶中加入少量的             溶液，然后完成乙同学的实验，得到了与甲同学相同的实验结果。
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Every human being is fallible; we make mistakes. In America when a mistake has been made, it is considered fitting for the person (1) to acknowledge his or her error and to apologize to anyone who has been inconvenienced. Even (2) are expected to admit their mistakes and apologize for them. Trying to (3) a mistake and denying your guilt are considered to be indicative of serious (4) .
If you make a mistake that (5) a group of people, a public apology is considered the best method for (6) . If the mistake was a serious one, or if some people were inconvenienced more than others, then the (7) should follow the public apology with private ones to (8) .
It is especially important for executives and company heads to be able to admit their mistakes. Sometimes leaders are afraid that if they (9) , they will lose the respect of their employees. Actually (10) — if you are honest with your employees and yourself, (11) , and show that you are willing to accept blame when you make a mistake, then your employees will be (12) you. They will also be more likely to admit their own mistakes.
If you (13) one person, it is usually best to apologize to that person alone, unless your mistake (14) by a large group of people. For example, if Leonard (15) to Mr. Todd during a committee meeting, it would be (16) for Leonard to apologize to Mr. Todd at the next committee meeting. If the (17) created by the initial mistake is public, then the apology should be public. However, if Leonard raised his voice to Mr. Todd when only the two of them (18) , he may apologize privately. Notice as well (19) the apologies are. As soon as you realize you have made a mistake, you should (20) .
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