问答题

It is indicated in Paragraph 1 and 2 that______.
A．all airlines provide Wi-Fi Internet service
B．aircraft-communications' frequency is higher than that of Wi-Fi
C．airlines provide Wi-Fi service selectively
D．not all mobile phones' signal will interfere with navigation

A.
A．all
B.aircraft-communications'
C.airlines
D.not

你可能感兴趣的试题

The main idea of the text is that______.
A．accents are unfortunately often used to reinforce preexisting linguistic stereotypes
B．accents are used to identify the social background of a speaker
C．accents are generally used to form. negative opinions of the speaker
D．we must stop discriminating against people due to accent

A.
A．accents
B.accents
C.accents
D.we

According to the text, the process of linguistic prejudice is deeper than it seems because
A．accents may be viewed as forms of social identity
B．accents are key ways to indicate class and prosperity
C．accents are typically most distinct among minority groups
D．there is really no one accent that should be thought of as superior

A.accents
B.accents
C.accents
D.there