As Americans age and population growth slows, ___ has emerged as the key social force to move the nation towards its new future by providing labor power and populous citizenry.
Aimmigration正確答案
Badministration
Cinvestment
Dauthority
答案與詳解
為什麼答案是 A
immigration（移民）能同時補充勞動力與人口數，完美呼應 labor power 和 populous citizenry，是填補人口老化缺口的社會力量。
載入中…
