Meteor showers and individual streaks of light that flash across the sky every night are generated when tiny flecks of celestial detritus, often no larger than grains of sand or of pebbles, burn up speeding through the atmosphere.
grains of sand or of pebbles, burn up speeding
grains of sand or pebbles, burn up while speeding
grains of sand or pebbles, which burn up while speeding
a grain of sand or pebble, which burns up as it speeds
a grain of sand or a pebble, burns up when it speeds
grains of pebbles错误
根据前面 not larger than 可以选出平行结构-ABC;A明显不对,排除;
剩下BC,C的which指代前面的pebbles,这个小圆石无法burn up·····排除,或者直接看前面句子成分 when tiny flecks of celestial detritus 没有谓语,后面肯定是直接接一个谓语,可选B。
often no larger than grains of sand or of pebbles是插入语,when后面从句,主语是tiny flecks,排除CDE
语意为在speeding的过程中burn up,故B正确
grains of pebbles 搭配不对
"often no larger than grains of sand or pebbles"为tiny flecks的定语。
burn up的主语为tiny flecks
pebble 小圆石
RON思路:
1. no larger than,看到这个,就该想到“comparison”,前面是flecks of ...., 那后面对应的应该是grains of ....., D/E杀;
2. are generated when 后面应该接完成句子,主语是tiny flecks of....., 谓语是burn up, C杀;
3. A选项的of pebbles,是grains of pebbles, 这说不通,A杀!
不能理解B选项的burn up while speeding
while doing表示一个时间状语,我感觉就像伴随一样。
这个burn up 这个动作是flecks 发出来的。
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