18米长的竹竿被截成两段，短的一段是长的一段的4/5，那么，短的一段有多少米长(

调节内皮细胞-黑色素瘤和骨肉瘤细胞间相互作用的粘附分子是（）

A.选择素

B.整合素

C.VCAM-1

D.CD36

E.CD45

建设工程风险识别的( )可避免识别工作效率低和风险识别的主观性的缺陷。

A．专家调查法

B．初始清单法

C．经验数据法

D．风险调查法

第一节 完形填空(共10小题；每小题2分，满分20分)

阅读下面短文，掌握其大意，然后从21—30各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。

How a person reacts to criticism often means the difference between success and failure．Take Ole Bull for example. His  21   father，a chemist，wanted him to study for the ministry and forbade him to play his beloved(心爱的)violin. He soon gave up the course and，disobeying his father， 22  all his time and energy to the violin．

Unfortunately，though he had great ability，his teachers were   23  unskilled，so that by the time he was ready to start his concert tour he wasn't prepared. In Italy a Milan newspaper critic(批评家)wrote：“He is a(n)   24   musician．If he is a diamond，he is certainly in the rough and unpolished．”There were two ways Ole Bull could have    25   to that criticism．He could have let it make him angry，or he could learn from it．Fortunately he chose the   26 ．He went to the newspaper office and asked to see the critic．The   27   editor introduced him. Ole spent the evening with the 70 year old critic，asked about his faults，and sought the old man's

28   on how to correct them．Then he cancelled the rest of his tour，returned home，and   29   the next six months studying under really able teachers. He practiced hour after hour to overcome his   30 ．Finally，he returned to his concerts and，when only 26, became the wonder of Europe．

21．A．awkward     B generous       C．stubborn      D．confident

22．A．devoted       B donated        C．supplied      D. allocated

23．A．absolutely    B．completely  C relatively       D．gradually

24．A．untrained     B．gifted        C．mature        D．1eading

25．A．referred       B．attracted     C．affected      D．reacted

26．A．former        B．1atter        C．1ater          D．early

27．A．frightened    B ashamed       C．astonished    D convinced

28  A．advice         B．attitude      C．virtue         D wisdom

29．A．totaled       B．squeezed      C．spent          D．spared

30．A．mistakes     B．troubles       C．difficulties   D．faults

以下（）产品允许在标明“处理品”的前提下销售，但价格应当低于合格商品。

A.不符合以商品说明、实物样品等方式表明的质量状况

B.不符合在商品或者其包装上注明采用的商品标准

C.存在危及人身、财产安全的不合理的危险

D.不具备商品应当具备的基本使用性能

下列花卉通过春化的阶段的方式为种子春花的是（）

A.紫罗兰

B.月见草

C.香豌豆

D.毛地黄