When he got to the crossroads, he went in the wrong (direct) ___

There are many countries in the world where the water supply is not sufficient for the growing population, and other sources have to be found. Even the sea is used in some countries, but the problem of removing the salt is a severe one. Sea water can be used for a supply of drinkable water if it can be separated from the salt dissolved in it.

He rushed (danger) __ across the street to catch the bus.

We are quite rich in terms of money，but not in terms of happiness．

B)就金钱而言，我们很富有；但就幸福而言，则并非如此。

C)说到钱，我们很开心。

D)我们不以金钱来衡量幸福。

Cars are responsible for most of the smog in cities，______(这已经对环境造成了严重的污染)．

Exposure to all media is important because they all contribute materials for ______.