下列哪种情况可引起全身淋巴结肿大
A．化脓性扁桃体炎
B．牙龈炎
C．淋巴结结核
D．乳腺癌
E．白血病
参考答案：E
1.___________ (专家) say we should walk at least 10,000 steps one day.
2. In the past, people's jobs_________（需要）more physicaleffort.
3. The wrong diet means you'll put on_______(重量).
4. Watching too much TV has a bad_______(影响)on your study.
一个正方形的边长扩大3倍，它的面积扩大[ ]
A．3倍
B．9倍
C．18倍
