Wheat:  Net sales of 427,200 metric tons for delivery in marketing year 2017/2018 were up noticeably from the previous week and from the prior 4-week average.   Corn:  Net sales of 1,445,900 MT for 2017/2018 were down 22 percent from the previous week, but up 59 percent from the prior 4-week average.   Soybeans:  Net sales of 616,300 MT for 2017/2018 were down 50 percent from the previous week and 24 percent from the prior 4-week average.   Soybean Cake and Meal:   Net sales of 223,100 MT for 2017/2018 were down 21 percent from the previous week, but unchanged from the prior 4-week average.   Soybean Oil:  Next sales of 11,800 MT were down 58 from the previous week an...