不属于阿片类的成瘾物质是 A．海洛因 B．吗啡 C．美沙酮 D．哌替啶 E．可卡因

. How to test best

It’s back to school, which means it’s back to tests. Which might also mean it’s back to being majorly stressed out . __小题1:__ Here are some simple ways to prepare thoroughly for tests.

Schedule study time. 

Trying to do all studying the night before a test makes it impossible to master all the material. __小题2:__ Instead, prepare for a test by scheduling study time each day for several days before.

Use your time wisely.

__小题3:__  Also, make sure you have all the supplies you need to study so you don’t lose focus.

While studying, be sure to make regular short breaks. Get a snack, take a bathroom break or play a quick computer game when it feels as if your brain is about to explode.

___小题4:____  

Studying with a parent or friends can help you understand the material better and to learn from one another. Have every person or pair take a part of the material, and come up with questions to quiz the group.

Keep the group small. Have everyone take turns as the group leader, who will assign the material, and make sure that conversation stays on what is being studied.

Don’t forget last-minute prep. 

Have your sharpened pencils and other things in your bag ready the night before the test. It’s important to get a good night’s sleep and then eating a healthy breakfast the next morning. __小题5:__.

Also, studying all the way up until test time can only create more anxiety. Stop studying an hour beforehand.

A．Form a study group.

B．Stay cool before the test.

C．It doesn’t have to be this way.

D．This will help you store important information.E. This way, both your mind and body are fully prepared.

F. Before studying , clear your desk so you can concentrate.

G. It will also make you tired and stressed on the day of the test.

利用滤纸片法测定化学消毒剂对微生物生长的影响时，影响抑菌圈大小的因素有哪些？

牙本质

JBT1200/1028型绞车是指滚筒直径为1200mm，宽为1000mm，减速比为（）的防爆型提升绞车。

A、0.0611111111111111

B、1：2.8

C、1：280

D、1：0.28

分析下列混悬剂处方中各成分的作用。[处方]沉降硫磺30g；硫酸锌30g；樟脑醑250ml；羧甲基纤维素钠5g；甘油100m1；纯化水加至1000ml