题目

计算下列各式的值： log2.56.25＋lg0.01＋ln＋21＋log23； 答案：原式＝log2.52.52＋lg10－2＋lne＋2×2log23＝2－2＋＋6＝6. Tom's mother kept telling him that he should work harder，but ________ didn't help.A．heB．whichC．itD．none