单词拼写（共10小题；每小题1分，满分10分）
【小题1】He was in trouble and sought (寻求) the help of a private lawyer.
【小题2】A friend in need is a friend indeed (真正地).
【小题3】It is so wet there that the trees are extremely tall, some measuring ( 量起来）over 90 metres.
【小题4】He was going to take them and their baggage/luggage (行李) to catch “The True North”.
【小题5】Most Canadians live within (在……之内)a few hundred kilometres of the USA border.
【小题6】Canada's population is only slightly (稍微）over thirty million.
【小题7】The earth became so violent （猛烈地）that it was not clear whether the shape would last or not.
【小题8】Water had also appeared on other planets but, unlike (不像) the earth, it had disappeared later.
【小题9】How life began on earth is one of the biggest puzzles （迷；难题）that scientists found hard to solve.
【小题10】They are putting too much carbon dioxide into the atmosphere, which prevents (阻止)heat escaping from the earth into space.
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解析：
【小题1】sought。考查动词。根据and前面动词was可以判断句子用一般过去时态，所以此处用seek的过去式sought。
【小题2】indeed。考查副词。此处填副词，根据汉语提示可知答案是indeed。
【小题3】measuring。考查非谓语动词。分析结构可知前后没有连词所以不是句子，而是独立主格结构，some和动词measure是主动关系， 故用现在分词，填measuring。
【小题4】baggage/luggage。考查名词。“行李”是不可数名词，故填baggage或者luggage。
【小题5】within。考查介词。表示“在（时间，距离范围）之内”，故答案是within。
【小题6】slightly。考查副词。此处是修饰动词，应该用副词形式，所以填slightly。
【小题7】violent。考查形容词。 bee。是系动词，后面用形容词做表语，故答案是violent。
【小题8】unlike。考查介词。 unlike是介词“不像”，所以填unlike。
【小题9】puzzles 。考查名词。one of 后面需跟复数名词，根据汉语提示可知答案是puzzles。
【小题10】prevents。考查动词。从结构可知此处是非限制性定语从句，从句中缺少谓语动词，根据主谓一致的原则可知答案填prevents。