托业词汇每日练226-230

226.abbr. method of measuring the profitability of a company (derived by dividing the net income by total assets)
(a) ROI 
(b) plc 
(c) pd. 
(d) i.e. 

227.abbr. requesting to view or read the opposite side of a page or document
(a) PTO 
(b) N/A 
(c) Inc. 
(d) G.D.P. 

228.abbr. top executive rank; person who is responsible for the security of a company’s communications and business systems
(a) C.I.O. 
(b) C.S.O. 
(c) G.N.P. 
(d) hr 

229.abbr. set of numbers which identifies a person
(a) C.S.O. 
(b) PIN 
(c) HTML 
(d) Ltd. 

230.abbr. language used to write pages and sites for the Internet
(a) HTML 
(b) ROI 
(c) N/A 
(d) C.V.

正确答案：  aabba

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