问题：
[单选题] The vacuum tube,invented near the beginning of our century,gave us the use of radio waves,an energy
A、was capturedB、capturedC、capturingD、has been captured问题：
[单选题] They were arranging the entertainment at the company’s annual dealer（ ）.
A、congressB、conventionC、conferenceD、assembly问题：
[单选题] This week's decision by the GMB union to bring a legal case against firms delivering for Amazon,the
A、bridge the employee-employer divide.B、improve its workforce management.C、cooperate with state-owned enterprises.D、move into delivery service market.问题：
[单选题] Though the ideal cure for noise is to stop it at its source,this may in many（ ）be impossible.The nex
A、casesB、conditionsC、presentationsD、circumstances问题：
[单选题] Today,some 30%of small business owners don't have a Web presence at all,while the vast majority who
A、Measure your progressB、Integrate customer loyalty programs and promotionsC、Just because you built it doesn‘t mean they‘II comeD、Justify your monthly...问题：
[单选题] Warren Buffett,who will host Berkshire Hathaway's annual shareholders'meeting on May 3rd,is an icon
A、houseB、collegeC、workforceD、retirement问题：
[单选题] Warren Buffett,who will host Berkshire Hathaway's annual shareholders'meeting on May 3rd,is an icon
A、decliningB、squeezingC、depressingD、suppressing问题：
[单选题] Warren Buffett,who will host Berkshire Hathaway's annual shareholders'meeting on May 3rd,is an icon
A、intoB、amongC、fromD、through问题：
