David was granted a ___ on his new invention—a device that can detect the sudden change of the water level in the river.
Aprogression
Bpatron
Cprevention
Dpatent正確答案
答案與詳解
為什麼答案是 D
patent 意為「專利（權）」，David 就他的新發明被授予專利，語意、搭配 (be granted a patent on) 皆完全正確。
載入中…
