例句與造句

1. The Gateway Hypothesis states that cannabis use increases the probability of trying " harder " drugs.
2. An alternative to the gateway hypothesis is the common liability to addiction ( CLA ) theory.
3. Some studies state that while there is no proof for the gateway hypothesis, young cannabis users should still be considered as a risk group for intervention programs.
4. It's difficult to find gateway hypothesis in a sentence. 用gateway hypothesis造句挺難的