32 We need to establish prices that are high enough to______ demand but low enough to prevent the continuation of a black market.
(A)curb
(B)endorse
(C) invest
(D) promote 

(A)curb 抑制/約束/控制
(B)endorse (公開)認同、認可；(在廣告中)宣傳、吹捧
(C) invest 投資
(D) promote 促進/促銷/推廣

 We need to establish prices that are high enough to curb  demand but low enough to prevent the continuation of a black market. 

我們需要建立足夠高的價格來抑制需求但又足夠低以防止黑市繼續存在。

curb 抑制

 endorse擁護

curb  v.控制；限制，約束；抑制

【to control or limit something that is not wanted】

The government should act to curb tax evasion.

政府應該採取行動抑制逃稅。

endorse  v.（公開）贊同，認可，支持

【to make a public statement of your approval or support for something or someone】

 I fully endorse (= agree with) everything the Chairperson has said.

我完全贊同主席所說的一切。