求助OG11-9 关于although的用法

yhwut

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9 Sunspots, vortices of gas associated with strong electromagnetic activity, are visible as dark spots on the surface of the Sun but have never been sighted on the Sun's poles or equator.
(A) are visible as dark spots on the surface of the
Sun but have never been sighted on
(B) are visible as dark spots that never have been
sighted on the surface of the Sun
(C) appear on the surface of the Sun as dark spots although never sighted at
(D) appear as dark spots on the surface of the Sun,
although never having been sighted at
(E) appear as dark spots on the Sun's surface,
which have never been sighted on


此题答案是A

不过C选项的解释是：although引导的从句应该有主语和谓语，但这里没有主语而且谓语也不完整。
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但是OG11-29题（如下）题干里although就没有主谓，自相矛盾么？请明白的人解释一下。多谢

[tr][td]Along with the drop in producer prices announced yesterday, the strong retail sales figures released today seem like it is indicative that the economy, although growing slowly, is not nearing a recession.
(A) like it is indicative that
(B) as if to indicate
(C) to indicate that
(D) indicative of
(E) like an indication of
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running2k

顶一下这个题，我也一直认为although只可以引导从句，但是这个29题确实是个范例，我google了下也发现although用在不完整从句的。

yhwut

bump

艺萱baby

1这里although作为从属连接词，不可以省略S和V  2句中although是连词，使分词短语表示的状语意义更加明确：Although living near each other, we never met.  The thief would escape again, although (being) caught.
这里表达的是对比，两个部分是相等的，but是并列连词，这点也说明although引导的句子不该是状语，不能用分词。
拙见。。。望感兴趣指点一二