—How _______ it is to spend the weekend at the seaside!
—Yes. Everyone will be _______ in the life there.
A:interested; interesting
B:interesting; interested
C:interesting; interesting
D:interested; interested
□=○+○,○+□=51,那么○=____ ,□=____ .
良好的环境是生存之本。让百姓呼吸清洁的空气是关乎人民福祉的大事。
如图是元素周期表中钠元素的相关信息及其原子结构示意图,下列说法正确的是( )