到目前为止上万人得了这种疾病。
________________________________________________
—Did Marie Curie discover radium?
—Yes. She is a great scientist, and devoted ________ to science.
—Why is Lucy so excited these days?
—Because she is looking forward to ________ the hill at the spring outing.
—You look so sad today.
—I passed my physics exam, but ________ chemistry.
Sandy's silk dress feels far ________ (光滑) than the cotton one.
Anna doesn't like watching films. Sometimes she does it________ (仅仅)to relax.
