题干

为改善睢宁县城东居民生态环境,县政府计划在二里桥小沿河两侧种植1000棵树.由于青年志愿者的支援,每天比原计划多种25%,结果提前5天完成任务,原计划每天种多少棵树?
上一题 下一题 0.0难度 选择题 更新时间:2018-05-20 07:39:22

答案(点此获取答案解析)

解:设原计划每天种树x棵,实际每天植树(1+25%)x棵,由题意,得

1000x1000(1+25

同类题3

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项是多余的。     In many countries, it is important to have many children. ____. When people have a large family, they feel more happy and they will not feel lonely. However, most people think one or two children are enough, and many couples have no children. Because taking care of a child is very costly, financially, emotionally, and socially, many couples regard large families as a disadvantage. ____.

    Many parents want to give their children chances to experience a variety of situations.  ____.

    Children, especially boys are expected to be energetic and assertive(果敢的). That doesn't mean, though, that they are allowed to "run wild" in public. ____, particularly in public places and in the homes of others. When a child misbehaves badly, only the child's patents may discipline(约束) him. Other adults should not interfere (干涉) unless the child is doing something which may be harmful to himself.____. While beating a child's buttocks(屁股), is acceptable to some people, any punishment that wounds the child or leaves a mark is considered child abuse(虐待) and is against the law.

A. The relationship between American parents and their children is harmony

B. In the US, a few religious groups think it is important to have a large family

C. Most parents discipline their children by rewarding good behaviors, not by punishing bad behaviors

D. Having many children would leave the couples and their children less freedom

E. American children are expected to accept invitations to a formal party

F. They bring their children with them to church, to sporting events, to stores, and to social events

G. Parents are expected to keep their children under control at all times