单项选择题：求图5-6-6所示平面应力状态的σα、εα。已知α=45°，E、μ分别为材料的弹性模

题型：单项选择题

任务型阅读。

Two Chinese farmers were invited to the stage in front of

thousands of fans in Shanghai last Saturday.

Wang Xu, 44, and Liu Gang, 29, sang "In the Spring" in front of about 80,000 people at the Shanghai

Stadium.

The audience were excited and let out loud cheers when they introduced themselves on the stage and

then when Liu started first sentence of their parts of the song.

The two migrant (移居者) workers became stars after singing the song in a rented room in a late

August evening. A friend recorded the performance on the mobile phone and sent it to the Internet. In

the video, Liu sits playing the guitar, while Wang Xu stands singing.

"If someday I am dead, please bury (埋葬) me in the spring. With no credit card, no girlfriend, or a

home with hot water, but only a guitar, I am singing happily, on streets, under bridges or in wild country,

though nobody pays attention to the music. " they sang. It has moved thousands to tears.

Wang and Liu want to go on singing, but underpasses are now out of the question as the crowds they

draw are too big, Wang told the public to be more understanding of migrant workers. "Please don't look

down upon migrant workers, who may be less educated, but are kindhearted," Wang said.

任务一：回答下列问题。

1. How did the two Chinese farmers become stars?

___________________________________

2. Why are underpasses out of the question now?

_______________________________________

任务二：:翻译文中划线的句子。

3. ___________________________________

4. _____________________________________

任务三：给本文拟一个标题。

5. ________________________________

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求图5-6-6所示平面应力状态的σα、εα。已知α=45°，E、μ分别为材料的弹性模