下面关于数据环境和数据环境中两个表之间的关系的陈述中，______是正确的。A．数据

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，从26~35各题所给的A、B、C和D项中选出最佳选项，并在正确选项上话对钩。

       It’s very important that we all recycle (再利用). In nature, everything ___26___ again. For example, when an animal dies, it becomes ___27____ animal’s food. Nothing is wasted. But humans have created things like plastic bags ___28___ can’t be broken down by nature. Our rubbish kills animals and __29___ water and soil. ___30___ we continue making too much rubbish, the problem will only get worse. If naturecan’t reuse the rubbish, we must recycle __31__.

       We should clean up the rubbish we’ve made because nature can’t.

       Recycling is also the right thing to do for another reason. The earth is rich in natural materials like water and trees, __32 __ these materials are not endless. We use up our natural materials much _ _33 __ than the earth is able to reproduce them. For example, each year we cut __34 __ more that 6,000 square miles of forest. But it takes an average of 25 years for a new tree __35__.

        Recycling can help us save the earth, so let’s take action right now.

26. A. use                B. using               C. is used            D. used

27. A. another          B. other              C. others             D. the other

28. A. who               B. which             C. how                D. where

29. A. pollutes          B. polluted          C. polluting          D. is polluted

30. A. When            B. Whether         C. Why               D. If

31. A. them              B. their                C. it                    D. itself

32. A. but                 B. so                   C. and               D. or

33. A. fastly              B. fast                 C. taster             D. fastest

34. A. out                 B. down              C. in                   D. up

35. A. grows            B. for growing      C. growing         D. to grow

哪些属全车盗抢险保险责任？（）

A.保险车辆全车被盗窃、抢劫、抢夺，经县级以上公安部门立案侦查，自立案之日志满三个月未查明下落的，本公司按照本保险合同的规定在约定的赔偿限额内负责赔偿

B.保险车辆全车被盗窃、抢劫、抢夺期间发生的车辆损坏，本公司按照本保险合同的规定在保险金额内负责赔偿修复费用

C.非全车遭盗窃、抢劫、抢夺、仅车上零部件或附属设备被盗窃、抢劫、抢夺、损坏

D.保险车辆全车被盗窃、抢劫、抢夺期间造成的第三者人身伤亡或财产损失

PTN设备GE长距光口的发光功率范围是0dbm~－5dbm，接收灵敏度是（）。

A.28dbm

B.-20dbm

C.22dbm

D.-24dbm

Cro蛋白对cⅠ基因的转录起负调控作用，对cro基因的转录起正调控作用。( )

下列关于“按揭”的说法，错误的是( )。

A．按揭原是地方方言，多见于我国的香港、澳门、台湾地区，20世纪80年代以来，逐步传入中国大陆境内

B．广义的按揭是指任何形式的抵押，不包括质押

C．狭义的按揭是指将房地产转移到贷款人名下，等还清贷款后再将房地产转回到借款人(抵押人)名下

D．住房按揭贷款又叫房地产抵押贷款