在正常人群中测某正态分布的生化指标，多少人测得值在±3SD中（） A.99.73%

我国知识产权法保护的对象主要有专利、商标、著作权和商业秘密。（）

句型转换。

1.Simon does his homework in his bedroom every night.(改为否定句)

   Simon ________  ________ his homework in his bedroom every night.

2.Millie plays badminton for an hour every day.(写出同义句)

Millie ________ about an hour ________ badminton every day.

3.Simon watches TV every evening.(改为一般疑问句)

________  Simon ________ TV every morning?

4.I’d like the yellow bag. (对划线部分进行提问)

________  ________ would you like?

5.There is a bottle of juice on the table. (对划线部分进行提问)

How ________ bottles of juice ________ there on the table?

用“>”“<”或“=”填空：

(1)元素A、B位于元素周期表中同一周期，已知等物质的量浓度的ACl_x溶液的pH小于BCl_y溶液的pH，则A的原子序数__________B的原子序数。

(2)将一定量氨气通入盐酸中，溶液的pH恰好为7时，溶液中c( NH₄⁺)_________c(Cl^-)。

(3)向等体积等物质的量浓度的盐酸和氯化铵溶液中加入等量的镁粉，镁粉完全反应后，盐酸放出气体的体积 __________氯化铵溶液放出气体的体积。