:第二部分：单项选择
1．The Yangtze River Delta is considered one of Chinas most economically and socially ______ regions．（ ）
A．dynamic B．flexible C．practical D．commercial
2．Many people travelled westwards to seek their fortune in the Gold Rush and now many museums show ______ life was like back then．（ ）
A．whose B．whether C．that D．what
3．﹣﹣﹣When shall we set out to handle the problem we came across last week？
﹣﹣﹣Not until ______a chance to discuss it thoroughly．（ ）
A．we have had B．will we have had
C．have we had D．we will have had
4．Different from previous years when many Chinese companies were ______ at marketing， they are now confident in communicating with the outside world．（ ）
A．clumsy B．ambitious C．desperate D．efficient
5．As VR games fast among youngsters and game fans， most of the VR headsets and controllers are not necessarily price﹣friendly．（ ）
A．take on B．hold on C．catch on D．co
