测定捻度时的解捻法通常用于测量（）的捻度.
A、粗纱
B、股线
C、单纱
D、以上都对
参考答案：A, B
血细胞的发育一般可分成________、________、________三大阶段。
—____ Tony's first school in London?
—No , it ____.[ ]
A. Was ; was
B. Were ; were
C. Was ; wasn't
D. Were ; weren't
