The passage supplies information that would answer which of the following questions？ ______
A. Why federal agencies have set percentage goals for the use of minority-owned businesses in public works contracts？
B. To which government agencies must businesses awarded federal contracts report their efforts to find minority subcontractors？
C. How widespread is the use of minority-owned concerns as "fronts" by White backers seeking to obtain subcontracts？
D. What is one set of conditions under which a small business might find itself financially overextended？
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听力原文：If you already have envelopes, there's no need to wait in line. You can go directly and finish the forms in them and hand over them.
(24)
A. Please draw a neat line.
B. Go head if you have envelopes.
C. Are you ready to go？
D. Can you explain why you lie？
The author refers to a "conveyer belt" in line 13 in order to ______.
A. describe the complicated motions made possible by back-coupling
B. show how temperature differences depend on the positions of the continents
C. illustrate the effects of convection in the mantle
D. account for the rising currents under certain mid-ocean ridges
听力原文：There are not enough cases for so many suits, so we have to rearrange those cases. We can fit one more suit into the case, can't we？
(26)
A. This case can hold more suits than that one.
B. We can't find the other case of suits.
Can this case fit in with the others？
D. Can't we put another suit into the case？
A．A person needs to go back home frequently.B．A person needs adjustment in a new envir
A person needs to go back home frequently.
B. A person needs adjustment in a new environment.
C. A person needs to experience some frustration.
D. A person needs to depend on others.
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