【1】迄今为止，科学家们还没有找到治疗癌症的良方。( remedy)

【2】她瞥了一眼那本字典的价格，二话没说就买了下来。( hesitation)

【3】为了帮助保护这些名画，每天只有几个人被允许进入参观博物馆。(admit)

【4】据说给别人留下好印象的关键是改进你与同学交流的方式。(key)

【答案】

【1】The scientists haven’t found a good remedy for cancer so far.

【2】She glanced at the price of the dictionary and bought it without hesitation.

【3】To help preserve these famous paintings, only a few people are admitted to the museum every day.

【4】It is said that the key to leaving a good impression on others is to improve the way you communicate with your classmates.

【解析】

【1】考查动词时态。时间状语为so far，由此可知，应为现在完成时。主语为The scientists，谓语为haven’t found，宾语为a good remedy for cancer。再根据其它汉语提示。故翻译为：The scientists haven’t found a good remedy for cancer so far.

【2】考查动词和名词。分析句子可知，此句是两个谓语动词的并列句。主语为she，并列谓语为glanced at和bought，宾语分别是the price of the dictionary和it，状语without hesitation。再根据其它汉语提示。故翻译为：She glanced at the price of the dictionary and bought it without hesitation.

【3】考查动词短语。主语为only a few people，谓语为be admitted to，宾语为the museum，目的状语为To help preserve these famous paintings。再根据其它汉语提示。故翻译为：To help preserve these famous paintings, only a few people are admitted to the museum every day.

【4】考查主语从句。据说It is said that，从句中主语为the key to leaving a good impression on others，表语为to improve the way you communicate with your classmates. 再根据其它汉语提示。故翻译为：It is said that the key to leaving a good impression on others is to improve the way you communicate with your classmates.