川芎横切片置紫外光灯下观察，显________色荧光，外皮显________荧光。
参考答案：亮淡紫 暗棕色
出生人口性别比的正常值范围是（）。
A、100-103
B、103-107
C、107-110
D、110-115
The train CRH380A, _____ trial operation on the Shanghai-Hangzhou high-speed railway, set a speed record
of 416.6 kilometers per hour. [ ]
A. started
B. to start
C. starting
D. being started
