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【单选题】
It was with great joy _______ he received the news that his best friend would come to Beijing ．A.
． because
B.
． which
C.
． since
D.
． that
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举一反三
【单选题】下列关于奇偶校验的说法错误的是( )
A.
采用奇偶校验的内存条为每个字节增加1位奇偶校验位
B.
现在内存芯片普遍使用带奇偶校验位的内存条
C.
具有奇偶校验功能的内存条在其组成方式上体现为多出一片芯片
D.
奇偶校验可以检测错误，不能纠正错误
【单选题】---- Hi, Vera, have you checked the account yet? ---- Certainly, I ______ it five times even though you told me to do it twice．
A.
checked
B.
will have checked
C.
have been checking
D.
had checked
【单选题】Supplementary ReadingChoose the best answer to each of the following questions according to what is stated or implied in the text.Which of the following statements is true?
A.
According to the new rules, during the recession, people become more deliberate when making choices and become more hesitant when spending.
B.
Recession makes people rethink their spending habits and they become more careful with their savings.
C.
According to the new su1-vey, during recession, people are paying more attention to a product’s “value proposition.”
D.
According to the new rules, price is not important any more for consumers when purchasing.
【简答题】判定（1） ；（2） 的奇偶性。
【简答题】判断 ，x∈(-∞，+∞)的奇偶性．
【简答题】已知 ， ⑴判断 的奇偶性； ⑵证明 ．
【简答题】某市一房地产开发公司（营改增试点一般纳税人），2017年发生以下业务：
（1）1月通过竞拍取得市区一处土地的使用权，支付土地出让金6000万元，缴纳相关税费240万元。
（2）以上述土地开发建设普通标准住宅楼、会所和写字楼各一栋，占地面积各为1／3。
（3）住宅楼开发成本3000万元，分摊到住宅楼利息支出300万元，包括超过贷款期限的利息40万元。
（4）写字楼开发成本4000万元，无法提...
【简答题】已知函数 ，判断它的奇偶性。
【单选题】以下哪一项是使用奇偶校验内存而不是非奇偶校验内存的好处？（）
A.
奇偶校验成本较低
B.
奇偶校验可检测出内存错误
C.
奇偶校验比非奇偶校验的速度更快
D.
奇偶校验可增加内存容量
【简答题】判断 ，x∈(-∞，+∞)的奇偶性．
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