李时珍为了写《本草纲目》,行程万里实地考察,不仅向他人请教,更注重亲自试验。例如,他吞服草本植物曼陀罗,直到精神恍惚、失去知觉,才认识到这种植物的入药麻醉作用。这说明( )
—Look at these stamps. I them for five years. —Wow, they are wonderful. A. kept B. have kept C. have bought
—What did you do last night? —I _________TV and read books. A. watch B. watched C. have watched
—Why are you worried? —I’m expecting a call from my daughter. She New for three days.
—Can I _______ your bike for a day? —Certainly.
—Could you please provide us ____ some information about the students’ health? — Of course, it’s my pleasure.