Grocery prices were boosted again last month.（）

单项选择题Such legal entities provide the means for international cooperation and support of macroprojects related to the moon and mars that encourage global private sector participation.（）

A. existences
B. vitalities
C. persistences
D. complicities

单项选择题Most of us think of sharks as dangerous, owing to lack of information rather than fear.（）

A. due to
B. because
C. as
D. for