融资融券的标的证券为股票的，应该满足的条件是( )。 A．在交易所上市交易满3个月

下列词语中没有错别字的一组是（     ）

A．雍容　经典　慰籍韬光养晦　筚路蓝缕，以起山林

B．安详遐思磕绊一如既往二人同心，其利断金

C．跨越振辐炫耀秘而不宣合抱之木，生于毫末

D．坐阵砥砺决择学以致用壁立千仞，无欲则刚

以下哪个选项不属于运输五要素（）

A.运输距离、运输环节

B.运输工具、运输场站

C.运输效益、运输费用

D.运输工具、运输时间

抽象类不能【 】。

不能避免肝首过效应的剂型是( )。

A．注射剂
B．气雾剂
C．栓剂
D．溶液剂(内服用)
E．舌下含片

Another critical factor that plays a part in susceptibility to colds is age. A study done by the University of Michigan School of Public Health revealed particulars that seem to hold true for the general population. Infants are the most cold-ridden group, averaging more than six colds in their first year. Boys have more colds than girls up to age three. After the age of three, girls are more susceptible than boys, and teenage girls average three colds a year to boys’ two.
The general incidence of colds continues to decline into maturity. Elderly people who are in good health have as few as one or two colds annually. One exception is found among people in their twenties, especially women, who show a rise in cold infections, because people in this age group are most likely to have young children. Adults who delay having children until their thirties and forties experience the same sudden increase in cold infections.
The study also found that economics plays an important role. As income increases, the frequency at which colds are reported in the family decreases. Families with the lowest income suffer about a third more colds than families at the upper end. Lower income generally forces people to live in more cramped quarters than those typically occupied by wealthier people, and crowding increases the opportunities for the cold virus to travel from person to person. Low income may also adversely influence diet. The degree to which poor nutrition affects susceptibility to colds is not yet clearly established, but an inadequate diet is suspected of lowering resistance generally.

What does the author claim about the study discussed in the passage

A．It contains many inconsistencies.
B．It specializes in children.
C．It contradicts the results of earlier studies in the field.
D．Its results apparently are relevant for the population as a whole.