改错题( )In addition to sentences and clauses，a syntactic category usually refers to a 1exical category or a phrasal category that performs a particular grammatical function．
改错题To please the children，some fireworks were set off a day earlier.
改错题The machine running at full speed turns5,000 pieces an hour.
改错题( )In a tree diagram of sentence structures, S is the root of the tree, occupying the topmost position, from where it branches into phrasal categories, which further branch into smaller syntactic units. The points at which the tree branches are located at various levels are known as branching nodes. A branching node is connected directly only to one lower node.
改错题“I’ve got used to do E-commerce on the net,” he said to me proudly.
改错题The computer, which is a very useful tool, is more and more dispensable in both our work and our life.
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改错题Warren and Associates are located at132 Austin Avenue.
改错题The tribe emphasized collective survival，mutual aid and being responsible for one another.
改错题That is the correct spelling of yourname isn’t it?
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改错题( )The optimum age for SLA always accords with the maxim of’ “the younger the better”．
改错题The contract, which stipulations have been negotiated over the past six months, is to be signed again.
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改错题同属规章类文书，守则与办法、条例、章程的写法不同。
改错题I doubt that he can answer your question
改错题线性回归预测检验中，若相关系数γ=0，表示变量x和y之间完全无关。( )
改错题麻疹减毒活疫苗的接种对象是3个月以上未患过麻疹的正常小儿，6~7岁时加强一次。 ( )
改错题脂溶性维生素在人体内不能储存，所以几乎没有毒性。( )