促炎症细胞因子包括（）
A.TNF
B.IL-1
C.IL-8
D.IL-6
E.IFN
参考答案：A, B, C, D
It was very hot yesterday, but it is __ today. [ ]
A. even hotter
B. more hotter
C. much more hot
食堂购进200斤含水量为90%的西红柿，3天后再测试发现西红柿的含水量变为80%，那么这批西红柿的总重量共减少了______千克。
A．100 B．10 C．20 D．50
