听力原文: Today, Daylight Saving Time begins for most of the United States at 2 a. m. on t
Even though Congress enacted the !aw, the law does not require that Daylight Saving Time be observed. It only states that if is observed then Daylight Savings Time must be done so uniformly. In the U. S. and its territories the following do not observe Daylight Saving Time: Hawaii, American Samoa, Guam, Puerto Rico, the Virgin Islands. The Eastern Time Zone portion of the State of Indiana, and most of Arizona with the exception of the Navajo Indian Reservation in Arizona.
Daylight Saving Time begin at 2 a. m. ______ in the United States every year.
A.on the last Sunday of April
B.on the first Sunday of April
C.on the last Sunday of May
D.on the first Sunday of May