周长是七b米的正方形,边长是______米.边长是七b米的正方形,周长是______米.
43÷4=t3(米),
43×4=t63(米);
故答案为:t3,t63.
On that cold day, only_____handful of people were at the station, where I made_____ acquaintance of Mr. Smith.
A.a; an
B.a; the
C.the; a
D.the; the
目前我国环境影响评价中普遍采用的环境预测方法是( )。
A.定性分析法
B.定量分析法
C.类比方法
D.空间模型法