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【多选题】
[多选题] 使用生物材料特别注意事项是A.
微生物、动物组织、细胞培养液、血液和分泌物等生物材料可能存在细菌和病毒感染的潜伏性危险，处理时必须谨慎、小心
B.
做完实验后，必须用肥皂、洗涤剂或消毒液充分洗净双手
C.
当被微生物等生物材料污染的玻璃器皿在清洗或高压灭菌前， 应立即浸泡在适当的消毒液
D.
被污染的物品必须进行高压消毒或烧成灰烬
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【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.
【单选题】Which of the following best summarizes the main idea of the passage?
A.
It is farming that gives human beings enough leisure time for sporting activities.
B.
Farming is very important in human civilization because it saves human beings from risks and uncertainties of hunting for survival.
C.
It is hunting that provides human beings with much simpler ways of obtaining meaty meals.
D.
Sporting activities satisfy the desire of modern men to exercise hunting skills which his forefathers developed for survival.
【单选题】Though I spoke to him many times ， he never took any of what I said ．
A.
． remark
B.
． observation
C.
． attention
D.
． notice
【单选题】Which of the following best summarizes the main idea of the passage?
A.
It is farming that gives human beings enough leisure time for sporting activities.
B.
Farming is very important in human civilization because it saves human beings from risks and uncertainties of hunting for survival.
C.
It is hunting that provides human beings with much simpler ways of obtaining meaty meals.
D.
Sporting activities satisfy the desire of modern man to exercise hunting skills which his forefathers developed for survival.
【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...
【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
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