考研英语选项辨析：bold与desperate

问题描述

...it identifies the undertreatment of pain and the aggressive use of “ineffectual and forced medical procedures that may prolong and even dishonor the period of dying” as the twin problems of end-of-life care.

39. Which of the following best defines the word “aggressive” (line 3, paragraph 7)?

 　[A] Bold.

 　[B] Harmful.

 　[C] Careless.

 　[D] Desperate.

老师，这个题选A，可是为什么不可以是D，答案解析思D项放入文中贬义色彩过强，我感觉答案解析的很牵强，求详细解析一下。

老师答疑

陈老师：

(1) bold：侧重指面对困难或危险时勇往直前，勇于进取的勇敢精神

Amrita becomes a bold, daring rebel. 阿姆里塔成了一个勇敢无畏的叛逆者。

In 1960 this was a bold move. 在1960年，这是一个大胆的举动。

Poland was already making bold economic reforms.  波兰已在大刀阔斧地进行经济改革。

(2) desperat：表示因绝望而孤注一掷的，铤而走险的，拼命的

Troops are needed to help get food into Kosovo where people are in desperate need. 需要军队帮助将科索沃人民亟需的食品送抵那里。

Desperate with anxiety, Bob and Hans searched the whole house. 焦急万分的鲍勃和汉斯把整座房子找了个遍。

He made a desperate attempt to hijack a plane.  他铤而走险，企图劫持一架飞机。