For the following question, arrange the sentences A, B, C, and D between sentences 1 and 6 to form a logical sequence with sentence 1 and sentence 6 as the starting sentence and the concluding sentence respectively:
(1) Critics have a legitimate concern.
(A) Ads appearing next to search results accounted for about three-quarters of its business last year.
(B) Sales jumped 125%, to
700million,whilenetprofitssoared14679 million.
(C) But Google is still largely a one-trick pony.
(D) Sure, Google's numbers for its second quarter, which ended June 30, were impressive.
(6)
Although this Ad market has been a red-hot market, it's also starting to mature.