5. (2024 连云港) Robot dogs ______ as volunteers for the first time during the 2023 Asian Games.
A. use
B. used
C. are used
D. were used
1 - 5

D

三、用所给词的适当形式补全短文
It is known that sweet dishes were cooled with snow and ice in ancient times. These 1 (enjoy) by the rich because they were expensive.
Sorbet(雪糕) 2 (introduce) in Florence in the 16th century. However, real ice - cream 3 (produce) for the first time in the 1630s by Gerald Tissain, the French cook of British King, Charles Ⅰ.
During the 18th century, ice - cream 4 (eat) at ice - cream cafés in London, Paris and other great cities. It was still expensive, though. It 5 (say) that George Washington 6 (spend) 200 dollars on ice - cream in just two months in 1790.
Ice - cream 7 (become) cheap when the first ice - cream factory 8 (open) in 1851 by an American, George Fussel. Since the 19th century, though, Italians have been seen as the great ice - cream makers. In the mid - 19th century, for example, ice - cream 9 (sell) in the streets of London by as many as 30,000 Italians. The Italian way of making ice - cream has been learned by many others since those days, so today excellent ice - cream 10 (make) and enjoyed all over the world.
1. ________
2. ________
3. ________
4. ________
5. ________
6. ________
7. ________
8. ________
9. ________
10. ________

1. were enjoyed 2. was introduced 3. was produced 4. was eaten 5. is said 6. spent 7. became 8. was opened 9. was sold 10. is made