Schools across China are expected to hire 50,000 college graduates this year as short-term teachers, almost

three times the number hired last year, _____ reduce unemployment pressures. [ ]

A. help

B. to have helped

C. to help

D. having helped

“装运前检验中检测工作要求”之一是，检测的标准与方法应根据进口国的有关标准、国际组织的标准、国家标准或行业标准进行。（）