We are not sure if it ________ tomorrow. If it________, we won’t go hiking.

Sam _____ some knowledge of the computer just by watching others working on it. [ ]

They are very interested _________ inpictures.

Only by________your attention________what you are learning can you learn it well. [ ]

下列对古诗的赏析，不恰当的一项是登高 杜甫风急天高猿啸哀，渚清沙白鸟飞回。无边落木萧萧下，不尽长江滚滚来。万里悲秋常作客，百年多病独登台。艰难苦恨繁霜鬓，潦倒新停浊酒杯。