MHC-Ⅰ类分子的受体是()
A.CD25
B.CD8
C.CD28
D.CD4
E.CD2
参考答案:B
There are lots of school things in the shop, ______ rulers, erasers and so on.[ ]
A. such as
B. as
C. such like
D. such
厂内车辆多发事故的原因有()、()、()、()、()。