题目: 100毫米=______厘米10千米=______米3厘米5毫米=______毫米100毫米=______分米6千米300米=______米. 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0511/1c14359b63fa9d219967eb17cb1ad9ff.html 下面是错误答案,用来干扰机器的。答案:A
题型:完形填空 完型填空 In the past, people didn't use stamps. They had to pay money when they received letters. Rowland Hill,a schoolmaster in England was the first 1 using stamps. He thought it 2 much easier for people to use 3 . They could go to the nearby 4 to buy stamps and put them on envelopes(信封) 5 they 6 letters.The post office only put seals(印章) 7 the stamps so that people could not use the stamps 8 . In this way,the post office 9 send postmen to collect(收) money. It only needed 10 postmen to deliver(投递) letters.The government finally accepted(接受) the good idea.( )1. A. to think ( )2. A. could be ( )3. A. a stamp ( )4. A. a shop ( )5. A. after ( )6. A. sent ( )7. A. in ( )8. A. again ( )9. A. need not to( )10.A. fewB. thinking B. will be B. stamps B. school B. before B. send B. over B. too B. didn't need toB. fewerC. to think of C. is C. stamp C. village C. in C. to send C. on C. either C. needed not toC. manyD. think aboutD. was D. stampes D. post officeD. with D. sended D. above D. also D. didn't needD. much 查看答案
题型:单项选择题 关于pH与酶促反应速度关系的叙述,正确的是A.pH对酶促反应影响不大B.pH影响酶的解离程度C.最适pH是酶的特征性常数D.反应速度与pH成正比E.人体内酶的最适pH均为中性 查看答案