福建干部培训中心网站:几道初一的题目

来源:百度文库 编辑:查人人中国名人网 时间:2024/03/29 01:54:26
1.(科学)老师在课堂上做了下列实验:把一只生鸡蛋放入一杯清水中,鸡蛋沉入杯底,往清水中溶入少量食盐,鸡蛋仍沉在杯底,继续溶入食盐,鸡蛋慢慢浮上水面.不用其他工具,你还能用另外的方法使杯底的鸡蛋浮上水面吗?

2.(数学)有两根同样长的蜡烛,粗蜡烛可燃烧4小时,细蜡烛可燃烧3小时,一次遇到停电,同时点燃两根蜡烛,来电后同时吹灭,发现粗蜡烛的长是细蜡烛的2倍,求停电时间.(用一元一次方程解)

3.(英语)用介词或副词填空
The teacher isn't here.He's talking _______the students.

Let's play basketball __________ class.

4.(英语)从B栏中选出正确答案填入A栏
A
A:Hi,Lucy!___1___.
B:Well,I live near my school,so I get up at a quarter to seven. I never go to school late.
A:Do you have brdakfast at home?
B:Yes,___2___.
A:When do you go to school?
B:___3___,so I go to school ai seven forty-five.
A:___4___.
B:I leave school at five past five and ___5___.

B
A.When do you play games?
B.I have lunch ai school.
C.When do you get home?
D.What time do you usually get up on weekdays?
E.I usually have some cakes and a glass of milk.
F.Class begins at eight o'clock.
G.I get home at five-thirty.

4.(英语)从B栏中选出正确答案填入A栏
A
A:Hi,Lucy!___1___.
B:Well,I live near my school,so I get up at a quarter to seven. I never go to school late.
A:Do you have brdakfast at home?
B:Yes,___2___.
A:When do you go to school?
B:___3___,so I go to school ai seven forty-five.
A:___4___.
B:I leave school at five past five and ___5___.

B
A.When do you play games?
B.I have lunch ai school.
C.When do you get home?
D.What time do you usually get up on weekdays?
E.I usually have some cakes and a glass of milk.
F.Class begins at eight o'clock.
G.I get home at five-thirty.

D E F C G

Let's play basketball after class.
The teacher isn't here.He's talking with the students

3.to
2.设时间为x
1-1/4x=(1-1/3)*2