A.apparently B.slightly C.greatly D.steadily
单项选择题52()
A. rupture B. corruption C. eruption D. disruption
单项选择题The word bump in Paragraph 3 may mean ().
A. to make something run fast B. to cause to revolve C. to move smoothly D. to collide
单项选择题The 3-D entertainment industry is a brand new business.
单项选择题53()
A. actions B. functions C. reflections D. behaviors
单项选择题The breakthrough made in superconductivity in 1992 is remarkable because ().
A. metal-containing ceramics turned out to be superconductors B. higher-temperature superconductivity was made possible C. ceramics were found to be superconductors D. room-temperature superconductors were developed