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随时随地学习
随时随地学习
A World Without Trs
Hav you vr imagind a world without trs? Try it, and you will s th whol world dry up and look lik a brokn tortois shll. At night, th tmpratur would drop sharply. Living craturs could not run away and it would b as if thy livd in hll.
thr ar som ffctiv stps w can tak now to protct trs. First, strict laws must b nforcd. Scond, th govrnmnt should offr subsidis to popl who plant trs. Most important of all, vry citizn must dvlop an awarnss of th importanc of trs and rmmbr: "no trs mans no living things."
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