国有经济在国民经济中的主导作用主要表现在______。 A．国有资产在社会总资产中占

阅读理解。

     The following rules will be used for the Reading Club:

     1.  All books must be read from page one to the last page.

     2.  The parent or the teacher will initial the booklist (书单)  after a student  has finished reading a book. Teachers  will  initial the  booklist  only for the books read at school.  It is the responsibility  (责任)  of the

student and parent to write the names of all books read, and the number of pages of the book on the book

list.

    3. All books read must be  of the student's reading level( 水平)  or above.  For example,  a third grade

student should not read first grade books if he or she is able to read at a third grade or higher reading level.

    4, All books the student finishes during the school year will be counted towards the 100 books. Comic books(漫画书) and the like will not be counted. Books of good quality read from the school library,

public library, classroom, home, etc. will be counted.

    5. When a student has finished a club booklist (one  sheet of 25 books or  l,500 pages) , he/she should

bring the sheet to the office. The child will get a small reward (奖励)  and may get another piece of booklist to go on reading. It takes four booklist sheets for 100 books or four l,500 pages to reach 6,000 pages.

Either way -You're a winner !

1. The student needs to ask his/her parents or teacher to initial the booklist__________ .

A. before he/she reads a book

B. after he/she finished reading a book

C. while he/she is reading a book

D. as soon as he/she begins to read a book

2. What kind of book will not be counted?

A. Story books.        

B. History books.

C. Picture books.      

D. Biology books.

3. How many books should a student read before he/she gets another booklist?

A. 25.                

B. 100.

C. 1,500.            

D. 6,000.

4. What does the underlined word 6'initial' mean in Chinese? It means "___________ "

A.借给              

B.还给  

C.签                

D.开始

5.  According to the rules, which of the following is NOT true?

A. The student should read the whole book through.

B. A third grade student can read the first graded books if he/she likes to do so.

C. The student needs to read 100 books or 6,000 pages in the school year to be a writer.

D. The parent will initial the booklist for the books the student reads at home.

患者女性，50岁，左下第一双尖牙及左下第一牙残根，既往病史中曾有风湿性心脏病史13年，现二尖瓣狭窄，心功能Ⅰ级

此患者最佳治疗设计是（）

A.分次拔除，术前预防性使用抗生素

B.分次拔除，术后预防性使用抗生素

C.分次拔除，术前术后预防性使用抗生素

D.一次拔除全部患牙，术前预防性使用抗生素

E.一次拔除全部患牙，术前术后预防性使用抗生素

患者，男，30岁。左下双尖牙冷热不适数月。检查：左下5颈部缺损，已露髓，探痛，叩痛（+），无松动，热测引起痛。

应诊断为（）

A.楔状缺损

B.深龋

C.酸蚀症

D.慢性牙髓炎

E.慢性根尖周炎

施工成本控制工作的核心是______。

A．检查

B．比较

C．分析

D．纠偏

根据TISAB的作用推测，使用氟离子选择电极测F^-时，所使用的TIASB中应含有NaCI和HAc-NaAc。( )