—Would you like to go shopping with us?  

—_____, but I have much housework to do.    [ ]

A. That's right    

B. I'd love to    

C. Sorry    

D. Never mind

(1)为进行”杨氏双缝干涉实验”,现准备了下列仪器:A.白炽灯;B.双窄缝片;C. 单窄片;D.滤光片;E.白色光屏.把以上仪器装在光具座上时,正确的排列顺序应该

是:            (填写字母代号).

(2)在双缝干涉实验中发现条纹太密,难以测量,可以采用的改善办法是:        _____

A.改用波长较长的光(如红光)做入射光   

B.增大双缝到屏的距离

C.减少双缝间距                       

D.增大双缝间距