2. Many people think about changing their lives, but only a few of them take action.
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3. Half of the holiday makers in the UK think about changing their jobs during the holidays.
A. 对
B. 错
从 80386开始,CPU有三种工作方式:______模式,______模式和______模式
根据苗圃生产苗木的用途或任务的不同可以把苗圃分为()、园林苗圃和其它专门苗圃。
A. 森林苗圃
B. 特种经济林苗圃
C. 防护林苗圃
D. 实验苗圃
林木种子大体上可分为()、()、()三大类及人工种子。