3+3

Exercise 3 Part 3 chemical industry ，Personnel Manager. Applicant，coordination skills, if you are interested. Part 4 A secretary should be good at computer skills, such word, excel, etc. A secretary is able to type letters and reports very fast. A secretary should be good at writing skills. A secretary should have a very good English and Chinese when he/she is answering telephone & taking messages, A secretary can make coffee and tea for the visitor and the boss. A secretary should be delight and glad when he/she is receiving visitors.

A、－2，3

B、3，－2

C、2，－3

D、－3，2

A、3

B、5

C、7

D、8

A、(-3,2]

B、[-3,2]

C、[-3,2)

D、(-3,2)

A、-3

B、3

C、0

D、1

A、{3}

B、{3,4}

C、{2,3,4}

D、{4}

A、

B、

C、

D、2/3,1/3,2/3

A、-1.8A

B、1.8A

C、-3A

D、3A

A、3~4

B、3~5

C、3~6

D、3~7

A、{2}

B、{2,3}

C、{0,1，2,3}

D、{3}