A:sinx
B:cosx
C:cosα+sinx
D:2sinα+cosx
See, your computer has broken down again! It doesn't ______ sense to buy the cheapest brand of computer just to save a few dollars.
2003年我国完成的造林面积比2002年增加17.3%,2003年完成的造林面积是2002年的____%。