根据Kennedy分类左上颌1687右上颌1278缺失属于:()
A.第一类第一亚类
B.第一类第二亚类
C.第二类第一亚类
D.第二类第二亚类
E.第三类第一亚类
A.第一类第一亚类
B.第一类第二亚类
C.第二类第一亚类
D.第二类第二亚类
E.第三类第一亚类
A.抗生素耐药
B.容易引起眼球感染
C.引起海绵状静脉窦炎
D.容易形成脓肿
E.容易入侵上颌窦
A.依据共同肺静脉腔所连接体循环静脉的不同,分为两个亚型:垂直静脉型、上腔静脉型
B.垂直静脉型回流途径:4支肺静脉相互连接形成共同肺静脉腔→垂直静脉→左无名静脉→右心房
C.垂直静脉型占心上型的50%~82%
D.垂直静脉行走于左肺动脉和左支气管之间,可随着左肺动脉与与左支气管的发育扩大而受到压迫,导致垂直静脉狭窄和阻塞
E.上腔静脉型占心上型的15%~40%,4支肺静脉在左心房后方形成共同肺静脉腔,多数从右侧肺门前方上行,与近心端右上腔静脉连接
A.Eisenhower and Kennedy
B.Johnson and Nixon
C.Johnson and Kennedy
D. Kennedy and Johnson
What is the best topic of the passage?
A.John Kennedy and His Prominent Family.
B.The Political Influence of Kennedy Family.
C.The Success of the Youngest American President.
D.John Kennedy,the Most outstanding President.
It is NOT implied in paragraph 2 that__________ .
A.John Kennedy was an excellent serviceman in the army during the World War ll
B.Kennedy once took a job of journalist after the World Warll
C.Many irregularities arose during Kennedy’S Administration
D.Kennedy became a Congressman after he entered politics
Which of the following is NOT true during Kennedy’S administration?
A.More people are entitled to political participation.
B.Kennedy witnessed his country’S failure in attempting to invade Cuba.
C.The missile crisis with Russia started a war between the‘two countries.
D.American people enjoyed a wider range of civil rights.