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问题 填空题
已知函数f（x）=
log2x，(x＞0)
3x，(x≤0)
，则f[f(
1
8
)]的值是______．
答案

由于函数f（x）=

log2x(x＞0)
3x(x≤0)
，则f(
1
8
)=log2
1
8
=log22-3=-3，f(3)=3-3=
1
33
=
1
27
．

故答案为：

1
27
．

阅读理解

 

小题1: The letter is probably from __________.

A. Supervisor Management Unit              B Thames Valley Police

C. Criminal Justice System                  D. Crime Reduction Committee

小题2: What’s the purpose of this letter?

A．To thank Ms. Adamczak for her contribution to the security of her community.

B．To inform Ms. Adamczak of how the investigation of the crime she reported was going

C．To respond to Ms. Adamczak’s crime report

D．To inform Ms. Adamczak of the investigation result of crime she reported小题3: Which one is not the possible result of this reported crime?

A．The police will pay a visit to Ms. Adamczak’s .

B．The police will contact Ms. Adamczak and give her an update.

C．The police will not send Ms. Adamczak any further letters.

D．Your report will be held on file as an undetected crime.小题4: What does the word “leads” most probably mean?

A．Clue.

B．Darkness.

C．Investigation.

D．Contact.
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单项选择题

集体合同生效的标志是（）

A.合同文书经过职工代表大会讨论通过

B.集体合同双方首席代表在合同文书上签字

C.集体合同文书报送当地劳动行政主管部门审查备案

D.劳动行政主管部门自收到集体合同文本之日起15日内未提出异议
查看答案