3.Few airlines want to impose a total ban on their passengers using electronic devices because ________. A) they don‘t believe there is such a danger as radio interference B) the harmful effect of electromagnetic interference is yet to be proved C) most passengers refuse to take a plane which bans the use of radio and cassette players D) they have other effective safety measures to fall back on

3.Few airlines want to impose a total ban on their passengers using electronic devices because ________.
A) they don‘t believe there is such a danger as radio interference
B) the harmful effect of electromagnetic interference is yet to be proved
C) most passengers refuse to take a plane which bans the use of radio and cassette players
D) they have other effective safety measures to fall back on

出自：河南师范大学-小学教育（本科)-大学英语Ⅱ

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