【填句补文】It’s now socially acceptable, even fashionable, to live alone. As people get better jobs and become financially independent, it becomes possible for them to maintain a one-person household. ________. However, people who do get married are marrying at a later age and divorcing more often.
A、There's more pressure to get married nowadays.
B、The growing number of women with good jobs has done much to increase the number of people living alone.
C、It seems that many grown-ups today are realizing that childhood dream.
D、More and more Americans are living alone.
【填句补文】 Although the researchers have only just made the technical details of the microscope public, it is already on sale. It is currently the size of a refrigerator and takes several minutes to scan a circuit, but Xiao and Schrag are working ________.
A、to take tiny chips we require
B、to making chips any smaller
C、to shrink it to the size of a desktop computer and cut the scanning time to 30 seconds
D、of conducting electricity