一串糖葫芦2元,福利院有50名儿童,每人一串糖葫芦共需[ ]
A.52元
B.70元
C.100元
答案:C
I want to borrow a book ______ animals. [ ]
A. with
B. in
C. of
D. about
下列哪种操作是不正确的?
A.操作机床时,戴防护手套
B.戴褐色眼镜从事电焊
C.借助推木操作剪切机械