Read these questions aloud and say the answers. 1. What is 1/2 of 6,000,000? three million 2. 2. How much is 35,246,000 plus
12,800,000? forty-eight million, forty-six thousand 3. 3. What is 25% of 200,000,000?
3. 分数词的读法
基数词表示分子，序数词表示分母，分 子大于1时，序数词要用复数。 e.g. 1 / 4 — one-fourth
2 / 3— two-thirds 7 / 9— seven-ninths 5 / 12— five-twelfths
特殊的表达法
½— a / one half ¼— a / one quarter ¾— three quarters
Science is the knowledge about the structure and behavior of the natural and physical world, based on facts that you can prove, for example by experiments.
substance n. 物质 e.g. Beware of what you do with
d_a_n__g_er_o_u_s__su__b_st_a_n_c_e_. 你处理危险品时要留神。
Do you know any interesting scientific phenomena? Discuss with your group members and choose one of them to make a presentation to the class.
