Mid-term quality inspection of mathematics in the second volume of seventh grade
(Completion time:
120
minute
Full marks:
100
Integral)
Date:
Name:
Achievements:
First, multiple-choice questions:
(Choose the serial number of a correct answer and fill in the brackets. Every question
2
Points, * * * *
20
Integral)
1
In the following four pictures:
1
Band∠
2
Opposite the vertex angle (
)
A
.
B
.
C
.
D
.
2
.
1
four
The square root of is (
)
A
.
1
2
B
.
1
2
C
.
1
2
D
.
1
16
three
The following formula is correct (
)
A
.
49=7
B
.
three
three
7=
seven
C
.
25=
five
D
.
2
=
three
(
-3
)
four
As shown in the figure, as we all know.
ab blood type
⊥
laser record
, vertical foot is
O
Elevation indicator
Too much
O
The point of a straight line, and then∠
1
Band∠
2
This relationship must be established (
)
A
. equal
C
supplement
B
Mutual redundancy
D
. Opposing vertex angles.
five
The following statement is true (
)
A
Infinite decimals are irrational numbers
C
Irrational numbers are infinite cyclic decimals
B
Numbers with roots are irrational numbers.
D.
Real numbers include positive real numbers and negative real numbers.
six
. Known point
p(
m
1)
In the second quadrant, the point
Ask (
-
m
3)
At (
)
A
first quadrant
B
Second quadrant
C
The third quadrant
D
quadrant iv
seven
As we all know, three straight lines are on the same plane.
a
、
b
、
c
, if
a
‖
c
b
‖
c
, then
a
and
b
Position clearance
The system is (
)
A
.
a
⊥
b
B
.
a
⊥
b
or
a
‖
b
C
.
a
‖
b
D
be uncertain of
eight
As shown in the figure, a block containing
45
The two vertices of the right triangle ruler are located on opposite sides of the ruler. If
∠
1
=
20
, and then∠
2
The degree is (
)
A
.
30
C
.
20
B
.
25
D
.
15
nine
. Positive number.
x
The square root of is
2
a
-
three
and
five
-
a
, then
x
The value of is (
)
A
.
64
B
.
36
C
.
8 1
D
.
Forty nine
2
E
F
M
ordinary
P
10
In a plane rectangular coordinate system, a known point
A
(
-
four
) and
B
(
2
)
,
Now line segment
ab blood type
edge
straight line
ab blood type
Translate and present a point of view.
A
Yudian
B
Overlap, then pan back to the point.
B
The coordinates are (
)
A
.
(
-
2
)
B
.
(
four
2
)
C
.
(
four
four
)
D
.
(
2
four
)
Second, fill in the blanks:
(Every little question
three
Points, * * * *
2 1
Integral)
1 1.
three
1 1
The antonym of is
, the absolute value is
12.
if
3= 1.732
30=5.477
, then
0.0003
The square root of is
13.
The proposition "the complementary angles of the same angle are equal" is rewritten as "if so"
14.
As the picture shows, I want to build a bridge on both sides of the river.
The shortest construction method is
, on the grounds that
15.
Xiaogang is in the east of Xiaoming's north.
60
directional
500 meters
Place, that Xiaoming is in Xiaogang's place.
Please describe Xiaoming's position, direction and distance relative to Xiaogang.
16.
Absolute value less than
eight
All integers of are
.
17.
Define "in quadrilateral"
Accelerated business collection and delivery system (adopted by the United States post office)
Medium, if
ab blood type
‖
laser record
, and
advertisement
‖
B.C.
, quadrilateral.
Accelerated business collection and delivery system (adopted by the United States post office)
It's called a parallelogram
"If one
The coordinates of the three vertices of the parallelogram are
(0,0),
(
three
)
,
(
1
three
)
,
So the coordinates of the fourth vertex are
.
Third, answer the following questions:
(***
59
Integral)
18.
(Every little question
four
Points, * * * *
eight
Integral)
(
1
) calculation
2
three
0.04
27
(
-2
)
(
2
) to meet the conditions.
x
Value,
2
1
(
1)
four
x
19.
(
six
Draw a picture according to the statement and answer the questions. As shown in the figure, VII
any other business
There is a little bit in it.
p。
(
1
) a little too much.
P
draw
personal computer
‖
Live record program
transmit
Involve (same as on or about)
Yudian
C
, painting
Parkinson's disease
‖
Involve (same as on or about)
transmit
Live record program
Yudian
D.
(
2
) Write a diagram with ∞.
Contact Potential Difference (abbreviation for contact potential difference)
complementary angle
. (
Just write two.
)
(
three
) Write a diagram with ∞.
O
equal leg angle
. (
Just write two.
)
O
A
B
.
P
three
20.
(
seven
) Complete the following reasoning process:
As shown in the figure, as we all know.
Delaware
‖
B.C.
DF
、
exist
Divide equally ∞
Automatic data entry
、∠
American Broadcasting Company Inc (ABC)
, you can push∠
Field retarder (field retarder)
=∠
Debbie
The reason is:
∵
Delaware
‖
B.C.
(known)
∴∠
Automatic data entry
=
. ( )
∵
DF
、
exist
Divide equally ∞
Automatic data entry
、∠
ABC，
∴∠
Automatic direction finder
=
1
2
,
∠
Abe
=
1
2
. ( )
∴∠
Automatic direction finder
=∠
Abe
∴
‖
. ( )
∴∠
Field retarder (field retarder)
=∠
Debenture corporate bonds (
)
2 1.(6
minute
)
As shown in the figure, quadrilateral
Accelerated business collection and delivery system (adopted by the United States post office)
Is a parallelogram,
mean sea level
=
three
laser record
=
ab blood type
=
five
, point
A
The coordinates are (-
2
)
(
1
Please write it down.
B
、
C
、
D
Coordinates of each point;
(
2
) find the quadrilateral
Accelerated business collection and delivery system (adopted by the United States post office)
The area of.
22.
(
seven
(points) Xiao Li wants to be in an area
36
m
2
On a square piece of paper, along the edge
Cut out a piece with an area of
30
m
2
Rectangle of
Form a piece of paper and make its length-width ratio
2
︰
1
. Q: Can Xiaoli use this square paper to cut out rectangular paper that meets the requirements?
Movies? Why?
23.
(
seven
Point) as shown in figure vii.
Automatic data entry
=∠
B
,∠
1
=∠
2
Floated Gyro
⊥
ab blood type
, q:
laser record
and
ab blood type
Vertical? Try to explain why.
B
A
C
E
F
D