If the total number of commuters to County W is twice the number to County Z, and if the average number of vehicles that transport commuters daily to County W is 30,000, what is the approximate average number of vehicles that transport commuters daily to County Z?3
数学s4-15
For the line with equation y = ax + b, ab ¹ 0,
the x-intercept is twice the y intercept.
The slope of the line 1/2
答案居然是D......
截距有正负阿,那么应该斜率是-1/2才对阿~
6. The skeleton of ------- bird that was recently discovered indicatedthat this ancient creature ------ today's birds in that, unlike earlierbirds and unlike reptilian ancestors, it had not a tooth in its head.
(A) a primeval... obscured,
(B) a unique... preempted'
(C) a primitive...anticipated
(D) a contemporary... foreshadowed
(E) an advanced...differed from
不理解为什么第二空天anticipated?