某实验小组以H2O2分解为例，探究浓度、催化剂、温度对反应速率的影响。按照如下方案完成实验。下列说法不正确的是
| 编号 |
反应物 |
催化剂 |
温度 |
| ① |
10mL10% H2O2溶液 |
无 |
25℃ |
| ② |
10mL20% H2O2溶液 |
无 |
25℃ |
| ③ |
10mL20% H2O2溶液 |
无 |
40℃ |
| ④ |
10mL20% H2O2溶液 |
1mL0.1mol/LFeCl3溶液 |
40℃ |
A．实验④反应速率最快
B．实验①反应速率最慢
C．实验②速率小于实验④的速率，只是因为实验④加入了催化剂
D．加入催化剂，能增大活化分子百分数，从而加快化学反应速率
If you leave the club, you will not be_____back in .
| A．received | B．admitted | C．turned | D．moved |
What I need is_____ book that contains ______ABC of oil painting.
| A．a; 不填 | B．the; 不填 | C．the; an | D．a ; the |
Jenny nearly missed the flight______ doing too much shopping.
| A．as a result of | B．on top of | C．in front of | D．in need of |
The CDs are on sale! Buy one and you get ______ completely free. 
| A． | other | B． | others | C． | one | D． | ones |
I’m sure that your letter will get______ attention. They know you’re waiting for the reply. 
| A．continued | B．immediate | C．careful | D．general |