The 'b' had been wrongly written as a 'd'.
b错写成d了。
Suppose you have a derived class D whose base class B has implemented some interfaces.
假设有个类型D，它的基类B实现了某些接口。
B is now distinctly slower than a, c, and d.
b现在明显比a、c和d慢。
D shall promptly provide to B a copy of each sublicense of its License Rights;
丁方应及时向乙方提供每一份再许可的副本，但是，其中包含的财务条款可以从文件中删除；
Swimming time of A, B, C groups were significantly longer than D group.
B、C三组的游泳时间均比D组要长，统计具有显著性差异。
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。
Answer the questions after each text by choosing A, B, C or D.
超出答题区域书写的答案无效；
Answer the questions after each text by choosing A, B, C or D.
超出答题区域书写的答案无效；
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