多选题 The ______ of impact craters on Venus suggests that erosion may have smoothed its surface over the past billion years.
【正确答案】 B、F
【答案解析】[解析] ●suggests说明前后同义重复。
●设空处______ of impact craters与have smoothed(磨平)同义重复。
●magnitude大量,pittance少量,spate大量,ruggedness表面粗糙,panoply全副武装,paucity少量。答案选BF。
●注:这里magnitude和spate是干扰项,同表示“大量”。