this time he also met misfortune. his engine broke down. he had to land on the sea. this was the second time.
【单选题】编译程序各阶段的工作往往是()进行的
my advice is this. you practice speaking english. you should do as often as possible.
a strange flying object is seemingly in the backyard.
workers are constructing a building for storage.
many people came from many countries to see it and a lot of goods were sent to the exhibition from different places of the world, and also a lot of machinery were exhibited, among which the most wonderful machine was a steam hammer.
传播过程的三大基本模式是()
i decided. i would not buy anything. then i got off the ship.
the earth is big. the moon is all. about 50 moons equal to one earth.
【判断题】符号就是字母。
【单选题】(a|b)*(a|b)对应的正规文法是( )。
thomas jefferson may be less famous than george washington. thomas jefferson may be less famous than abraham lincoln. thomas jefferson is the third president of theunited states. (请使用同位语)
jenny était belle à .
my mother is sixty eight years old. my father is seventy four years old.