单项选择题


In this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow. Mark the correct answer to each question on your answer sheet.
Questions 1 to 5 are based on an interview. At the end of the interview you will be given 10 seconds to answer each of the following five questions.
Before
set up his pizza delivery service, he

A．tested samples on potential clients.
B．handed out product questionnaires.
C．assessed demand in different areas.
D．trained staff for a few months.
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单项选择题
The price drop of crude oil is beneficial in that it
A．helps to revitalize the world economy.
B．promotes oil export to other nations.
C．helps to push up the regional economy.
D．provides an opportunity to the oil exporters.
单项选择题
A (n) ______ is a unit that is of distinctive value. It is an abstract unit, a collection of distinctive phonetic features.
A．phone
B．sound
C．allophone
D．phoneme
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