A:to visit
B:to hurt
C:visiting
D:hurting
7 18 +1.875=____ 19÷23 =____ 7.2÷8=____ 45×15 =____
34×15 ÷ 34×15 =____ 60÷(1-40%)=____ 48÷(1+20%)=____ 34 -25%=____
关于热现象,下列说法正确的是( )
I live in a (an) neighborhood. Many people and cars come and go very often.