Trắc nghiệm: The boat rudder was first invented to steer large ships which……………….the Chinese to build huge ships as early as 200 AD. | Gửi trắc nghiệm |
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Trắc nghiệm: The boat rudder was first invented to steer large ships which……………….the Chinese to build huge ships as early as 200 AD. | Gửi trắc nghiệm |