几道百思不得其解的语法题再次请教大牛

harvard2012

1. the electronics copany has unveiled what it claims to be the world;s smallest network digital camcorder, the length of which is that of a handheld computer, and it weighs less than 11 ounces.
(d) is the world's smallest network digital camcorder, which is as long as a handheld computer and weighs
正确法案是D,is 很别扭啊？ 我选的A

2.three out of every four automobile owners in the US also own a bicycle.
(d) in the US, three out of every four automobile owners owns bicycles.
正确选A，我选D。 A 的 in the US 有歧义啊

3.Ozone, a special forn of oxygen that screens out harmful ultraviolet rays, reaches high concentrations twelve miles above Earth, where it has long appeared that it was immune from human influence; we have now realized, though, that emissions of industrial chlorofluorocarbons deplete the ozone layer.
(d) had long appeared immune to
正确选D，完全不理解这时态，还有immune的用法啊

echo0709

A 不对得原因去看 后面得and 很明显在定语从句中出现了两个主语～

treewing929

第三條個時態真的不太明白, 為何 had appeared ???
同求!!

第一條 A 一定不好!
,and ....不平行
而且 claims to be 好似解自稱

echo0709

你看题目的时候看完好不好，后面的分句不是用的realized 过去时吗？  所以那个理所当时过去一直是怎么样认为得啊  当然是用had咯 做sc有一定得看题顺序得～ 这个是仁者见仁智者见智得顺序 自己好好体会吧

treewing929

你看题目的时候看完好不好，后面的分句不是用的realized 过去时吗？  所以那个理所当时过去一直是怎么样认为得啊  当然是用had咯 做sc有一定得看题顺序得～ 这个是仁者见仁智者见智得顺序 自己好好体会吧

-- by 会员 echo0709 (2012/3/3 17:13:17)

後面不是 have realized 嗎?

imluisfigo

1. A后面的it指代不明；D的说法是正确的，见CD的Prep语法笔记中第214题的补充说明，最后那部分
2. 主语是复数咯，owns怎么可能对
3. immue to固定搭配，打游戏的都知道吧，immue to magic......