问题
单项选择题
设L为抛物线y=x2上从0（0，0）到P（1，1）的一段弧，则曲线积分的值是（）．
A.1
B.0
C.1/2
D.-1
答案
参考答案：B
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设L为抛物线y=x2上从0（0，0）到P（1，1）的一段弧，则曲线积分的值是（）．
A.1
B.0
C.1/2
D.-1
参考答案：B
| 阅读短文，用方框中所给单词的适当形式填空。方框中有一个单词是多余的。 | |
Shanghai last year and fell in love with it. I think it's 2________ a beautiful city. As a 3_______, I think I will meet lots of 4______ people. I think I'll live in an apartment with some of my best friends, because I don't like living 5_______. I'll have pets. I can't have any pets now because my mother hates 6________, and our apartment is too 7 . Maybe I'll have many different pets 8_______ I get a big apartment. And I think I'll go to America for further study some day. |