问题
多项选择题
重力流的形成条件包括（）
A、一定的深度；
B、物源条件；
C、触发机制；
D、滞水环境。
答案
参考答案：B, C, D
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重力流的形成条件包括（）
A、一定的深度；
B、物源条件；
C、触发机制；
D、滞水环境。
参考答案：B, C, D
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| Yesterday I read a report in a newspaper. It was about a charity show. The aim of the show was 1 money for the poor children. In the country areas, some children can't go to school 2 working to support their families because their parents can't afford 3 their education. Many pop stars took part in the show, such as Andy Liu, Jay, and Kitty Chen. They didn't ask for any pay. There 4 a lot of performances like singing and dancing last week . The audience were 5 excited that they clapped their hands from time to time. Of course, the show was 6 . All the people followed the stars' examples. A great number of people donated much money to the show. The money from both the tickets and the donations from generous businesses. And it helped the poor children go back to school. Now many charity shows 7 in our country every year. Some help people in 8 and some help support 9 in poor areas. Now let's try _10_ best to help others, I'm sure the world will become better and better. | |||
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