The number of leaf nodes in a full binary tree of depth d is .
A.
B.
C.
D.
- · 有4位网友选择 C,占比40%
- · 有3位网友选择 A,占比30%
- · 有2位网友选择 D,占比20%
- · 有1位网友选择 B,占比10%
A.
B.
C.
D.
A.n(k-1)
B..n/k
C.(n+1)/k
D.(nk-n+1)/k
Suppose a given binary tree has 10 leaf nodes, the number of nodes with degree of 2 is
A.12
B.11
C.9
D.Indeterminable
A、ogive
B、histogram
C、frequency distribution
D、stem and leaf plot
All insectivorous plants have roots, so they don't get all of their nutrients from the insects they take in. Insectivorous plants tend to live in soil that lacks enough nitrogen for them to exist, so they consume their insect victims in order to get the nitrogen they need. There're many types of insectivorous plants in the world--perhaps 500 known species of insectivorous plants worldwide. Of these types of insectivorous plants, we're going to look at one of the better known ones in depth.
The insectivorous plant that we're going to discuss in detail is the Venus flytrap, which is native to North America. It catches insects by suddenly snapping the ends of one of its trap leaves around an insect.
A Venus flytrap has a number of trap leaves and that each trap leaf is divided into two parts. Inside the two parts of the trap leaf are three sensory bristles, which resemble tiny hairs. When an insect touches the bristles inside a trap leaf, the two surfaces of the leaf shut instantaneously, and the insect is trapped inside the parts of the leaf. The Venus flytrap then discharges a digestive liquid into the leaf in order to assimilate the insect and obtain the nitrogen the plant needs in order to survive.
What is the topic of this passage?
A.Insects that feed on plants.
B.Animals that feed on insects.
C.Plants that use insects to survive.
D.Insects that are attractive to plants.
Millriver is a tiny village. Someone says it possesses a tree. The tree is cursed. Someone mentioned the tree in a newspaper. People visit Millriver. The number has now increased. The tree near a church. Someone planted it fifty years ago. It is only in recent years. It has gained an evil reputation. People say that anyone touches the tree will have bad luck, picks a leaf will die. The tree has already claimed a number of victims. Many villagers believe. They has been asked the vicar to ask others cut down the tree. Up to now he has refused. He has pointed out. The tree is a useful source. People can get income from it. Tourists have been coming to see it. They are from all parts of the country. People all said that. The tourists have been picking leaves and cutting their names on the tree-trunk. Up to now, there are no men has been struck down by sudden death!
为了保护您的账号安全,请在“简答题”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!