3. The tech industry in Silicon Valley had been secretive about the makeup of its workforce largely until 2014, when companies began ____ their diversity statistics. Unsurprisingly, employees are mostly white men, but each firm pledged to add more women and minorities to their ranks.
(A) discharging
(B) liquidating
(C) releasing
(D) emancipating

The tech industry in Silicon Valley had been secretive about the makeup of its workforce largely until 2014, when companies began ____ their diversity statistics. Unsurprisingly, employees are mostly white men, but each firm pledged to add more women and minorities to their ranks. 

翻譯: 矽谷的科技團隊對於員工的組成保密，直到2014年，矽谷的公司才釋放出統計數據。不意外的，員工大多是男性白人，但是每一家公司都承諾未來會加入更多女性及少數族群。

（A）放電

（B）清算

（C）釋放、放出

（D）解放

題目:

secretive  adj.

遮遮掩掩的，守口如瓶的，秘密的，偷偷摸摸的; [生]（促进）分泌的; 嘴紧; 鬼头鬼脑

pledge to

n. 保证，誓言; [法]抵押权; 公约; （表示友谊的）干杯

vt.& vi.  使发誓，保证; 典当，抵押

vt.  许诺; 用…担保; 以誓言约束; 向…祝酒

vi. 作出庄重有约束力的誓言; 祝愿，祝酒