上肢与躯干连接的唯一关节是（）
A.肩关节
B.肘关节
C.胸锁关节
D.肩锁关节
E.肋胸关节
参考答案：C
It was after years of hard work that his dream a lawyer finally .
A．of becoming; came true
B．to become; come true
C．of becoming; realized
D．to become; realized
有丝分裂与减数分裂过程中均要发生的现象是（）①DNA复制和有关蛋白质的合成②纺锤体的形成③同源染色体配对和分离④着丝点的分裂⑤非同源染色体的自由组合⑥同源染色体间的交叉互换
A.①②③
B.①②④
C.①③⑤
D.①②④⑥
