I. Find the word which has a different sound in the part underlined.

     Read the words aloud.

     1. A. looked                     B. watched                    C. stopped                D. carried

     2. A. bath                         B. father                        C. theater                 D. health

     3. A. study                        B. success                      C. surprise                D. sugar

     4. A. children                   B. charity                      C. charm                  D. champagne

     5. A. danger                     B. angry                        C. language              D. passage

1 phần gạch chân là /ed/

2 là /th/

3. là /s/

4.là/ch/

5./a/

+ Có bộ xương ngoài bằng kitin nâng đỡ, che chở

+ Các chân phân khớp động

+ Qua lột xác mà tăng trưởng cơ thể

THAM KHẢO
1. The film is not ____________   long as the film I watched last week.

A. but                                     B. same                      C. either                     D. as

2. My sister’s taste in art is quite different ____________ mine.

A. either                                 B. too                          C. from                       D. as

3. Water puppetry ________in the 11th century in the villages of the Red River Delta of North Viet Nam.

A. originated                         B. started                   C. began                     D. formed

4. __________water should I put into the glass?

A. How many                                    B. How long                C. How much              D. How far

đinh bộ lĩnh

Gọi 2 cạnh làn lượt là a,b(cm;a,b>0)

Đặt 

Ta có 

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a,=−x2y3zb,=−115x3y4c,=−215x9y7z2d,=4x4y6z8⋅x12y8z4=4x16y14z12e,=ank⋅bkn+k⋅cnk⋅ank⋅bnk⋅ckn+n=a2nk⋅b2kn+k⋅c2kn+n