燃料在气缸中燃烧不完全，则会排（）。A、黑烟 B、白烟 C、蓝烟

阅读理解。

     Some people believe that genes and intelligence (基因和智力) decide a student's success. But there

 is no study to support this opinion, and in fact, it is wrong. Students'success or failure (失败) is finally

decided by one simple thing: how they learn. Some students are lucky when they find ways that arehelpful

for them to study. But not all students are so lucky. Some students still learn in wrong ways. Dr. James

J. Asher developed "Total Physical Response" as a way to teach languages. Studies at San Jose State

University showed that students who moved their bodies while learning English learned more words and

grammar in a short time. Those who sat still and didn't move learned less. After a year, the students who

learned by moving their bodies still remembered 80% or more of what they had learned, while the others

forgot over 80%. So you should make sure that you keep moving when you learn English. As you listen

to a story or an article, mime (模拟) the action. For example, if you hear the word "go", move yourfeet.

Pretend you are acting out the story or the article that you are listening to. By doing this, you will be able

to learn English better, remember it longer and use it more easily.

根据短文内容，补全表格中所缺的信息。

     In the writer's opinion, what decides students'success or failure? Their    1   .Why did Dr. James

J. Asher develop "Total Physical Response"? To    2   .Who studied better according to the studies? The

students who    3    while learning. What was the performance (表现) of the students who kept still while

learning? They    4    of what they had learned. What's the writer's suggestion for the way of studying?

To    5    while learning.

幼儿观察力的发展有哪些表现?

反应4NH₃+5O₂=4NO+6H₂O，在2L的密闭容器中进行，半分钟后NO的物质的量增加了3.0mol，则此反应的平均速率v（X）为[ ]

A.  v（O₂）= 0.1mol·（L·s）^-1        

B.  v（NO）= 0.05 mol·（L·s）^-1

C.  v（H₂O）=0.075 mol·（L·s）^-1     

D.  v（NH₃）=0.025 mol·（L·s）^-1

膀胱肿瘤的血尿为（）

A.无菌性脓尿

B.无痛性肉眼血尿

C.疼痛后血尿

D.尿频终末血尿

E.血尿进行性加重

等于（）。

A．0

B． 

C．2

D．1