Part A
You will hear a lecture about shingles, an infectious disease. As you listen, answer Questions 1 to 10 by circling TRUE or FALSE. You will hear the talk ONLY ONCE.
You now have 1 minute to read Question 1 to 10.
Questions 1 to 10:

A shingles rash around the eyes must be treated immediately because it could harm your sight.

在如图所示的研究“电磁铁磁性强弱”的实验中，开关的_______可控制磁性的有无；改变电磁铁磁性强弱，可通过滑动变阻器改变________实现；要判断电磁铁的磁性弱，可通过观察电磁铁吸引大头针的_______来确定。