以下叙述不属于相对性状的是[ ]
A．有耳垂和无耳垂
B．能卷舌和不能卷舌
C．卷发与金发
D．单眼皮与双眼皮
答案：C
China has successfull y sent up the Shenzhou Ⅶ spacecraft into space________with sophisticated
devices of science and technology.[ ]
A. to be equipped
B. equipped
C. equipping
D. having been equipped
一种新型病毒的直径约为0.000043毫米，用科学记数法表示为（ ）米。[ ]
A. 0.43×10-4
B. 0.43×10-5
C. 4.3×10-5
D. 4.3×10-8
