题目内容：

Fill in the blanks according to the phonetic symbols.

1.A. release  B. breath       C .please        D. least_______

2.A .item     B. science    C.chemical        D. provide_______

3.A. protect     B. note        C. those    D. whole_______

4.A. oxygen      B. average    C. exchange        D. gas_______

5.A. chemical    B. China      C . cherry   D . choice_______