某三角形的面积为15cm2 , 它的一边长为xcm,且此边上高为ycm,请写出x与y之间的关系式,并求出x=5时,y的值. 答案:解:∵三角形的面积=边长×这边上高÷2,三角形的面积为15cm2,一边长为xcm,此边上高为ycm,∴{#mathml#}y=30x{#/mathml#};当x=5时,y=6(cm).–How was your trip
abroad?
–Great. The only pity is that I ______to buy some gifts for my friends.
A.
forgot B. forget C.
would forget D. was forgetting