问题
解答题
计算:(5a-3b4)2•(a2b)-2.
答案
(5a-3b4)2•(a2b)-2
=25a-6b8•a-4b-2
=25a-10b6
=
.25b2 a10
计算:(5a-3b4)2•(a2b)-2.
(5a-3b4)2•(a2b)-2
=25a-6b8•a-4b-2
=25a-10b6
=
.25b2 a10
阅读理解
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1. How many pieces of the news above have something to do with family education? | ||||||
A. 2 B. 3 C. 4 D.5 | ||||||
2. Which of the following statements is True according to the news above? | ||||||
A. "Tiger Mother" is famous for her book about how she educates her two daughters. B. Students caring about environmental protection will wear a green scarf. C. Tsinghua University became "China's first independent university". D. Huang Yibo began to read People's Daily at the age of two. | ||||||
3. We can infer from the news about Dong Fan that _______. | ||||||
A. he works hard B. he spares no efforts to help his students C.he tends to measure success by money D. he is a professor of Yale University | ||||||
4. All the six pieces of news above deal with the subject of ______. | ||||||
A. schools B. parents C. students D. education |