Land can be polluted by ______ from agriculture.A．heavy metalsB．pesticides and nitrate－poo

The amount of fluid delivered by a reciprocating pump can be regulated by _____.

Land protected by the National Trust ______.A．can be developed and modernizedB．includes na

The best hair style. can be achieved by________． 查看

The best hair style can be achieved by______.A. h

Earthquakes can be predicted by observing________

Judging from the text the problem of hyperconnectivity can be solved by__________.