问题
选择题
A new study has found no evidence that the sunscreen, commonly used to reduce the risk of skin cancer, actually____ the risk.
A．increase
B．increasing
C．increases
D．having increased
答案
答案：C
考查句型结构。根据句子结构可知该词作句子的谓语。句子完整机构为是the sunscreen actually increases the risk。 commonly used to reduce the risk of skin cancer作the sunscreen的定语。