目标

.式中:dIJ为目标回波的间隔距离;i,j=1,2,…,N;I=1,2,…,N;J=1,2,…,N。在目标回波中，若dIJ≤α，|H(Ai)-H(Aj)|Fig.2.　(a)The topography around Xinyi in the west of Guangdong Province and(b)the Δ2h′(negative values represent mountains,and positive values are valley

1. My sisters shoes ____ blue. A. is B. are C. am 2. The price of the shoes ____. A. is 10$ B. is $10 C. are 10 dollars 3. Look!Those books are ____ a good price. A. at B. in C. for 4. ——Which number is between(在……之间) sixteen and

张　颖Go to CinemaIn'weekends，I often go to movies and my friend—Jim.I like'come-dies for the reason that they are funny.But Jim don't like they.He likes thrillers.He thinks it is very exciting.But I'think it-is very scary.Liu Dehua