题目内容:
Whichofthefollowingstatementsistrue? A.ThemarketshareofApple'ssmartphoneissmallcomparedwithAndroiddevices.
B.SalesofiPhonesaremorethanmarket-watchershaveexpected.
C.CustomersalwayschooseApplewhentheyupgradetheirsmartphones.
D.ThesoftwareandservicesofApple'sonlinestorearefree.
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答案解析: