我国人类历史上第一次使用的金属是()。 A.铁 B.铜 C.铅 D.石头

题型:单项选择题

问题:

我国人类历史上第一次使用的金属是()。

A.铁

B.铜

C.铅

D.石头

考点:中学教师文化素养文化素养题库
题型:单项选择题

阅读理解。

Rules of Reading Club

     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(write the first letter of one's name)the booklist after a student

has finished reading a book. Teachers will initial the booklist only for the books read at school. It is the

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

the book on the booklist.

     3. All books read must be of the student's reading level 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 (including the textbooks read at school) will be

counted towards the 100 books. Comic books 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 1,500 pages), he or she

should bring the sheet to the office. The child will get a small reward and may get another piece of

booklist to go on reading. It takes four booklist sheets for 100 books or for 1,500 pages to reach 6,000

pages. Either way-You are a winner!

1. The student needs to ask his/her parent or teacher to initial the booklist ________.

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

B. before he/she reads a book

C. after he/she finishes reading a book

D. while he/she is reading a book

2. What kind of book will not be counted?

A. Story books.B.Picture books.

C. History books.D.Biology books.

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

A. 25.

B. 1,500.

C. 6,000.

D. 100.

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

A. The student should read the whole book through.

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

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

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

题型:单项选择题

请你根据《光对鼠妇生活的影响》这一探究实验的设计来设计《湿度对鼠妇生活的影响》:

(1)提出问题:______.

(2)作出假设:______.

(3)以下是某小组同学在探究《湿度对鼠妇生活的影响》实验中的实验记录,请你分析:

时间

环境   鼠妇数

2min3min4min5min6min7min8min9min10min11min
干土4320101201
湿土6781091098109
①在这组对照实验中,变量是______.

②在研究光对鼠妇生活的影响实验中所用鼠妇的数量最好是______.

A、一只    B、两只    C、三只    D、十只或十只以上

③这组同学的第10次数据中,在干土处的鼠妇是______只,在湿土处的鼠妇是______只.

④分析本组实验结果,得出的结论是:鼠妇适于生活在______环境中.

题型:单项选择题

含挥发油的根类药材是()

A.玫瑰花、款冬花、扁豆花、佛手片 

B.刺猬皮、九香虫 

C.黄精、党参、天冬 

D.杏仁、柏子仁、砂仁 

E.厚朴、肉桂、砂仁

题型:单项选择题

下列反应为吸热反应的为()

A、5O2+4P=2P2O5

B、[C]+[O]={CO}

C、[FeS]+(CaO)=(CaS)+(FeO)

D、2[P]+5(FeO)+3(CaO)=(3CaO•P2O5)+5[Fe]

题型:单项选择题

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