单项选择题

Only a small and select group of electrical engineers was shown the designs for the microprocessors in order to ensure ______.

(A) confident
(B) confidential
(C) confidentially
(D) confidentiality
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______ working for TLM, Inc. indicate that customer receptiveness to traditional forms of advertising is on the wane.
(A) Markers
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单项选择题
Employees of Waterman Tech, Inc., only one of ______ has any sort of sports background, were placed last in the regional softball league.
(A) whom
(B) theirs
(C) what
(D) them
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