题目

I am Henry Jekyll. I was born in the 1800s. I inherited(继承) a large fortune, a healthy body and an excellent mind. I was naturally hard-working and soon I was very successful in my job. So the outside world saw a serious, hard-working, successful doctor. Behind this quiet character, however, was a wild, fun-loving, irresponsible young man. Both of them were me. They lived together in the same body.     “Was it possible,” I wondered, “to find a drug that could give each side of my character its own separate face and body?”     After much thought and careful study I be某学生用量筒量取液体时，将量筒放平，倒入液体，面对刻度线，第一次俯视凹液面最低处，读数为19mL；倒出部分液体后，又仰视凹液面最低处，读数为11mL。则该同学倒出的液体实际体积是A.8 mLB.大于8 mL C.小于8 mL D.无法判断