The truth is that the economic boost from spinoffs, is untraceable. The Berlei bra, for instance, uses a Dupont material called CoolMax, which was derived from a fabric developed to improve thermal clothing by Outlast Technologies in collaboration with NASAs Johnson Space Center. The proportion of Berlei bra sales accurately described as a NASA spinoff is anyones guess, but critics say returns cant even come close to covering the cost of a shuttle flight.
The very fact that这样的结构通常用来提示重要内容的出现。所以当类似的结构出现在段落首末位置的时候,该句极有可能是全段的主题句,也就是主题句。类似的结构还有The point/problem/concern/idea/key factor is that, what matters/accounts is, what is extraordinary is等等。
C. 表示人物观点结论性的词:
The Welsh forces in Dyfed-Powys and Gwent both had impressively shape spidergrams thanks to comparatively good records on reducing and investigating crime. The force with the most dimming graph was Avon and Somerset, which was once regarded as a metropolitan force but had been grouped under the new scheme with areas including Norhampton shire and West Mercia which have much lower crime levels. Avon and Somerset, which includes Bristol, pointed out that graph reflected the fact that the force and suffered form a wave of street crime that had subsequently been greatly reduced.
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