生物群落是生物种内许多个体组成的群体。 [ ]
参考答案：错
We go out for a walk every evening. My grandfather goes with us _____ . [ ]
A. well
B. as well
C. as well as
D. very well
敷设架空光缆时，挂钩间隔为（）。
A.50cm
B.60cm
C.80cm
D.100cm
