多发性穿凿样骨质破坏多见于（）
A.嗜酸性肉芽肿
B.多发性骨髓瘤
C.内生软骨瘤
D.骨转移瘤
E.骨肉瘤
参考答案：B
Haibao stands steadily on the big feet and holds the world with big arms, ______shows China has the ability and faith to host a successful Expo.
A．that
B．who
C．which
D．what
1945年，美国对哪个国家投放了原子弹：（）
