I __________ a gift yesterday, but I didn't ________ it.
A:received, accept
B:received, accepted
C:accepted, receive
D:accepted, accept
通读全文《巴斯德征服狂犬病》,你知道了什么?
循环小数18.4753753…的循环节是____.
调节河水水量季节变化的有效措施是( )