开放性伤口实施清创术应争取在（）。 A.伤后6～8小时内进行 B.伤后9～11小时内

阅读短文，然后用短文括号中所给词的适当形式填空。

     Believe it or not: the more TV you watch, the 1_______ (little) happiness you get. This is the result of

a new study. It shows that unhappy people watch more TV than happy people.

     Well, you may say that you enjoy 2_______ (watch) TV. In fact, TV gives you happiness for a short time,

but unhappiness for a long time.

     Why? It is because, if you watch TV, you cannot take part in many other good 3_______(activity). And

sometimes, if you are unhappy, you 4_______ (usual) prefer being a couch potato (整天坐在沙发上看电视的人), right? Watching TV is relaxing to you.

     Then if you want to be happy, what should you do? You can read newspapers, visit 5_______ (you) friends,

go to parties, … but don't watch television all the time. Now turn off the TV, and take a walk outside. It's the

6_______ (one) step to being happy!

队列是限定在表的一端进行插入和在另一端进行删除操作的线性表。允许删除的一端称作______。

一定温度下，在2L的密闭容器中，X、Y、Z三种气体的物质的量随时间变化的曲线如下图所示：下列描述正确的是 

A．反应开始到10s，用Z表示的反应速率为0.158mol/（L·s）

B．反应开始时10s，X的物质的量浓度减少了0.79mol/L

C．反应开始时10s，Y的转化率为79.0%

D．反应的化学方程式为：X（g）+Y（g） Z（g）

即操医师之术者，亦跋前疐后之时也。______

赫梯古王国