翻译下列句子 
1.他们在世界各地举办音乐会，音乐会的票总是销售一空。
They've ____  all over the world and the tickets have always____ .
2.因为下雨，他没有去公园。
He didn't go to the park____the rain.
3.冼星海融合了西方音乐和中国音乐。
Xian Xinghai ____ western and Chinese music____ 
4.直到玛丽来我校我才认识她。
I ____Mary ____ she started ____to my school.
5.科学家认为地球上的生命已有几百万年的历史。
Scientists think that ____ on Earth for millions of years.

党和国家一切工作的根本出发点是 （）

 2014年诺贝尔物理学奖由蓝光二极管的发明者获得，这项发明使制成白光LED灯成为现实．要制成白光LED灯，除蓝光二极管外，还需____ 两种色光二极管．小明家中有4盏“220V 5W”的LED灯，1度电可供这些灯同时正常工作____ 小时．

完形填空。

    Today is Saturday. It's 1. Jack and Kitty go to a park in the country side. The wind is 2 gently. The clouds are moving slowly in the  3. Some birds are singing in the trees. They are flying a kite 4. The kite flies  5 the tree. Suddenly(忽然)，The wind 6  strong. The clouds are moving quickly. The strong wind blows their kite away. Jack and Kitty go home quickly.