______plates? (    )

A．A

B．An

C．Six

算一算
1. nine thousand + one hundred = ___________
2. four thousand one hundred and eighty-six + thirty –seven = ___________
3. six hundred and forty-five + twenty-four = ___________
4. two thousand + three hundred and seventy-six = ___________

Today is September _____.

A．first

B．one

C．two

根据图片选出正确的单词。   
（1）________
(one   two   three   four   five)    (chair   chairs)
（2）________
(one   two   three    four    five) (desk   desks)
（3）________
(six  seven   eight   nine    ten) (ruler  rulers)
（4）________
(five    six    seven    eight    nine) (book   books)
（5）________
(two   three  four   five six)    (boy  boys)

There are so many new words in the__________ (二十九) lesson . (    )

A．twenty-nine

B．twenty-nineth

C．twenty-ninth