丙烯在常温常压下为无色易燃（） A.固体 B.液体 C.气体

温度能影响种子的萌发，主要是影响种子[ ]

A．种皮胀破    

B．胚轴伸长    

C．吸收水分    

D．有机物的转化

用括号内所给词的适当形式填空(每空不限一词)。

1. My hobby is reading comic books. What about ______ (you)?

2. Three ______ (five) of the students in our class are League members.

3. I don't think it's always right to be busy ______ (make) money all day.

4. He left home in a hurry because he had some problems ______ (solve) in his office.

5. I don't like traveling by plane. I think it's ______ (safe) to travel by train.

6.  ______ (luck), modern medicine can help people with eye problems in less developed countries.

7. They ______ (plan) a trip to Disneyland at this time yesterday.

8. —Excuse me, where is the ______ (lady) room. —It's over there.

9. I am ______ (excite) about passing the final exams.

10. He speaks Chinese very well though he is a ______ (Canada).

某人测定某溶液浓度（单位为摩尔/升），获得以下结果：0.2038、0.2042、0.2052、0.2039.第三个结果是否应弃去？结果应如何表示？测定了第五次，结果为0.2041，这时第三个结果可以弃去吗？（测量三次：置信度90%=0.76；测量四次：置信度90%=0.64）

在关系数据模型中，二维表的行称为元组，二维表的列称为 【6】 。

中国公民孙某系自由职业者，2009年收入情况如下：
(1)出版中篇小说一部，取得稿酬50000元，后因小说加印和报刊连载，分别取得出版社稿酬 10000元和报社稿酬3800元。
(2)受托对一电影剧本进行审核，取得审稿收入15000元。
(3)临时担任会议翻译，取得收入3000元。
(4)在A国讲学取得收入30000元，在B国进行书画展卖，现场作画取得收入70000元，已分别按收入来源国税法规定缴纳了个人所得税5000元和18000元。
要求计算：

2009年孙某境外所得应在我国补交的个人所得税。