日本的纸币一共有几种？（）
A.一种
B.二种
C.三种
D.四种
参考答案：C
临床上哪一项体征高度提示为多发性硬化（）
A.痛性强直性痉挛
B.核间性眼肌麻痹
C.共济失调
D.截瘫
E.构音障碍
It was on July 1, 2006 ___ Qinghai-Tibet railway began operation, ____ is a symbolic project in
China's West Development Strategy.[ ]
A. when; that
B. that; when
C. which; when
D. that; which
