近似数4.060×103有______个有效数字.
近似数4.060×103的有效数字为4、0、6、0.
故答案为4.
小题1:If you want to join the club, you need to fill in the a______________ forms.
小题2:With so many problems a_______ unexpectedly, the manager was at a loss about what to do next.
小题3:A red light is a s___________ of danger.
小题4:I picked up a few good b______________ in the second-handed market.
小题5:If you do wrong, you d_____________ punishment.
小题6:Don’t look down upon the person who have a __________(身体的) disability.
小题7:We use flowers and balloons to __________(装饰)our classroom on New Year’s Day.
小题8:I got a very friendly ______(接待) in the meeting room when I arrived at their school.
小题9:My heart __________(下沉)when I knew that I failed in the job interview.
小题10:To write a good essay you must first organize your ideas _____________(有条理地).
南水北调就是把____________丰富的水资源通过引水工程调到我国缺水的________和_________,分_____________三条调水路线。