题干
At no time does the salesgirl get up late in the morning, for she is always too busy _____ a good rest.
A：to take
B：taking
C：took
D：take
答案(点此获取答案解析）
A
璃窗，中间带有一根玻璃短柄。用此仪器进行有关实验时，具有装置简单、操作方便、现象明显、可反复使用等优点。用此仪器不能反复进行的实验是
