问题
选择题
The US federal government has released 252 applications so far, ______ fields including education and health care.
A.covered
B.to cover
C.covering
D.having covering
答案
答案:C
题目分析:句意:美国联邦政府到目前为止已经推出了 252个申请,涉及的领域包括教育和健康护理。这里是定语,修饰applications ,applications和cover是主动关系,用现在分词做定语,所以选C。