She spoke very confidently because she wanted to make a great on her employer at the first time.

A. Influence B. pressure

C. Impression D. Effect

解析:选C。make an impression on sb. 给某人留下印象。

2. lack

v.&n. 缺乏；缺少的东西

注意：lack作名词时，后常接of。lack作动词时，既可作及物动词，也可以作不及物动词，作不及物动词时，后常接for或in。lack不用于被动语态。

常用结构：

lack sth. 缺少某物

lack for sth. 缺少；需要

for/through lack of... 因缺乏......

no lack of... 不缺乏

a/the lack of ... ......的缺乏

He didn't go there because he lacked courage.

他没去那里，因为他缺乏勇气。

The plant died for lack of water.植物因缺水而死。

They lacked for nothing.他们无所需求。

联想拓展

lacking adj. 匮乏的；不足的；没有的