________ people come to enjoy flowers in Australia in September.
A:Ten thousands
B:Thousands of
C:Ten thousand
D:Ten thousands of
离子
Na+
Al3+
Cl﹣
X
个数
2a
a
b
读图1,回答下列问题.
一河宽60m,船在静水中的速度为4m/s,水流速度为3m/s,则( )
____,波涛如怒。(张养浩《山坡羊·潼关怀古》)