1 . The car is running at_____________ average speed of 50 kilometres an hour. （用适当的词填空）

2 . In 1860, a better plan was put forward by __________ Englishman, William Low.

3 . 单句语法填空
1. Supplies have been handed out to those _________ houses were destroyed in the earthquake.
2. It won’t be long ________ the final exam comes, so be prepared.
3. Weather _________ (permit), the two teams will have a fierce competition tomorrow.
4. Childish _________ it may sound, my new year resolution is to stop all the wars.
5. If you can choose _________ third foreign language, which one will it be?
6. The old man appears _________ (break) his leg. Call the ambulance immediately!
7. It _________ (report) that the employment rate has been on the increase since May.
8. It is the training that he received at school _________ made him a successful writer.
9. Only if Kate _________ (climb) to the top of the mountain can she have a great view of the city.
10. _________ the graphic(图表) shows, the sale this year decreased by 20 percent.