The fan has a good aerodynamic performance, smooth operation, high efficiency, long life characteristics, a total of A, B, C, D four kinds of structures.
该风机具有良好的气动性能、运转平稳、振动小、效率高、寿命长等特点，共有A、B、C、D四种结构。
You may borrow this dictionary A. as long as B. so far as C. in case D.
只要你能保证这本字典干净，你借多长时间都行。
B. They have a clear purpose in learning a foreign language. C. They can monitor their own learning. D. They can concentrate for a long time in class.
他们在语言学习中没有明确的目的，无法掌控自己的学习，而且注意力也容易不集中。
Ti was in a small village in the south _____ he spent his childhood and met his life-long friend – the local schoolmaster. A. where B. when C. which D.
That 【考点】强调句型 【句意】就是在南方的一个小村庄里，他度过了童年，并且遇到了他一生的好友-也就是当地的校长。
Ti was in a small village in the south _____ he spent his childhood and met his life-long friend – the local schoolmaster. A. where B. when C. which D.
That 【考点】强调句型 【句意】就是在南方的一个小村庄里，他度过了童年，并且遇到了他一生的好友-也就是当地的校长。
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