The weather is very cold. You should need           more clothes.

                                                                                                                                                        [ ]

A. wear                

B. to wear

C.dress                

D.to dress

在下列蛋白中，除（）外，都是黏着带所需要的。

A、跨膜蛋白

B、细胞内附着蛋白

C、肌动蛋白

D、中间纤维