One of the few things you _____ say about English people with certainty is that they talk a lot about the

weather. [ ]

A. can

B. must

C. should

D. need

正常人骨髓显像的表现为（）。

A.中央骨髓和外周骨髓的肱骨和股骨近端1/3骨髓显影

B.中央骨髓和外周骨髓的肱骨和股骨近端1/2骨髓显影

C.中央骨髓和外周骨髓的肱骨和股骨近端2/3骨髓显影

D.中央骨髓和外周骨髓肱骨、股骨近端及远端均显影，影像清晰

E.外周骨髓的肱骨和股骨近端1/3骨髓显影