Why do some parents work long hours?
A. Because they can provide for their family.
Because they can avoid being at home.
C. Because they can be a hero at work.
D. Because they can buy what their child wants.
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When would a parent NOT be their child’s hero?
A. When the parent is involved in raising money.
B. When the parent does work outside the home.
C. When the parent won’t do what the child wants.
D. When the parent is involved in selfish activities.
According to the man, what would a heroic parent do for their child?
A. They would not give up time at home.
B. They would risk everything to protect their child.
C. They would be selfless.
D. They would not put themselves at risk.
生物多样性一般包括？
A. 物种多样性
B. 遗传多样性
C. 景观多样性
D. 生态系统多样性
下列哪些措施可以用来控制外来入侵生物？
A. 机械防治
B. 化学防治
C. 生物防治
D. 综合防治
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