进入冬季以来,我国北方地区遭遇低温、强降雪等恶劣天气。下列天气符号中表示降雪的是
A B C D
A.A
B.B
C.C
D.D
答案:D
.She listened to the music with her face_________ in tears.
A.bathes
B.bathing
C.to bathe
D.bathed
细胞之间以桥粒相连接的是()
A.星网状层
B.外釉上皮层
C.釉结
D.内釉上皮层
E.中间层