语法与词汇 44.Early signs of______seen in the herbal medicine study are extremely encouraging and based upon these data, we are now planning a registration program.

A、 faculty
B、 reception
C、 deterioration
D、 efficacy

【正确答案】 D

【答案解析】D项“efficacy功效”符合题意，如：This plan would have some efficacy in preventing any danger．(这计划对于防止危险会有些效力。)其他三项“A项faculty才能，技能；B项reception接待，接收；C项deterioration变坏，堕落”都不正确。本题空格处是说在草药研究中看到的早期功效的迹象。因此D项为正确答案。