词汇：

1.do the math: 认真考虑一下

2.abuse [ə'bju:z]

n. 滥用,恶习
v. 滥用,辱骂,虐待

例句与用法:
She attacked him with a torrent of abuse.
她用连珠炮似的谩骂来攻击他。
I didn't expect him to descend to personal abuse.
我没料到他会堕落到对我进行人身攻击的地步。
The boy's breaking of window glasses caused a hail of abuse.
这个男孩打碎了窗户玻璃，招致了一阵恶骂。

3.circumstances ['sə:kəm.stənsis]

n. 情况,情形,环境(常用复数)

例句与用法:
I think he conducted himself admirably, considering the difficult circumstances.
考虑到那种困难的情况，我认为他的表现令人钦佩。
Because of extenuating circumstances, the court acquitted him of the crime.
因考虑到情有可原，法庭判他无罪。

4.investigate [in'vestigeit]

v. 调查,研究
[计算机] 研究

例句与用法:
I felt impelled to investigate the matter further.
我觉得自己有责任对事情作进一步调查.
His representation influenced them to investigate.
他的陈述促使他们去调查。

5.conclusion [kən'klu:ʒən]
n. 结论

例句与用法:
The result of your report is an erroneous conclusion.
你的报告结果是错误的结论。
Your information is inaccurate and your conclusion is therefore wrong.
你的信息不准确，所以你的结论是错误的。