读海报, 判断以下陈述的正误。 Ø ( ) 1) Salad sauce is on sale on 9th, Oct. Ø ( ) 2) There are three items on sale on 10th, Oct. Ø ( ) 3) Oil is cheaper on 5th, Oct. Ø ( ) 4) Cell phone is ¥ 1668 from 1st, , Oct to 3rd, Oct. Ø ( ) 5) Both banana and watermelon are on sale on 8th, Oct.