(10 CÂU – MỖI CÂU ĐÚNG ĐƯỢC 2 ĐIỂM)

57. - E:GIAO ANCAC DE THI THAM KHAO BGD&DTTHU VIEN BO DE THI TRAC NGHIEM CAC CD-DHDE 11
E:GIAO ANCAC DE THI THAM KHAO BGD&DTTHU VIEN BO DE THI TRAC NGHIEM CAC CD-DHDE 11
57. Scientists have found various practical uses for (the) laser during/ in/ for/ over the past decade/decades