【答案】A foreigner's first impression of the U.S. is

A foreigner's first impression of the U.S. is likely to be ________ everyone is in a hurry ---- often under pressure.

a. what              b. that            c. which            d. one in which
答案
B

考点名称：可数名词及其单复数

可数名词：

是指能以数目来计算，可以分成个体的人或东西；因此它有复数形式，当它的复数形式在句子中作主语时，句子的谓语也应用复数形式。