... living
things on the Earth. This is also called the natural environment. Some people call
themselves environmentalists. These people think that harmony with the environment
is important. They think ... start, it might break
10
(46)________ or, someone might run into it. Before anything even happens, people have
worked themselves up into a (47)________of anxiety. And when something does...
... that you are self-confident. All this affects the way you feel about
someone.
Also, a stranger may remind you of a meeting with someone. This may be because of something as simple as
the fact that ... (create) 10.
a lot of free space around the store. Brian followed the advice, and within a year, the store was the most
successful B&Q store in the country.
1 2 3 4 5
6 7 8 9 10
Te...
... her 10 years ago.
A. I haven’t seen her since 10 years. B. I didn’t see her for 10 years.
C. I haven’t seen her for 10 years. D. I didn’t seen her since 10 years.
525. How long have you bought this ... the flowers in this garden.
560. When was this car bought ?
A. When do they buy this car ? B. When did they bought this car ?
C. When did they buy this car ? D. When are they bought t...
... being done now.
17. When did they built this house?
A. When this house was built/ B. When is this house built?
C. When did this house build? D. When was this house built?
18. A person who teaches ... anger D. angryly.
24 This is Kensington Garden _____ every visitor from abroad admires.
A. which B. what C. from where D. where
25. This is a store _____ you can buy almost everything from.
A. wh...
... living
things on the Earth. This is also called the natural environment. Some people call
themselves environmentalists. These people think that harmony with the environment
is important. They think ... start, it might break
10
(46)________ or, someone might run into it. Before anything even happens, people have
worked themselves up into a (47)________of anxiety. And when something does happ...
... ĐỀ THI TUYỂN SINH VÀO LỚP 10 THPT
MÔN TOÁN – THỜI GIAN 150 PHÚT
Đề 12
PHẦN 1. TRẮC NGHIỆM KHÁCH QUAN : (4 điểm)
1. Tam giác ABC vuông tại A có
3
tg
4
B
=
. Giá trị ... tổng bình phương tất cả các nghiệm bằng 10.
2. Giải phương trình:
2 2
4 2
3
5 3 ( 1)
1
x x
x x
+ = +
+ +
Câu 2 : (3,5 điểm)
1. Cho góc nhọn α. Rút gọn không còn dấu căn biểu thức :
2 2
cos 2 1 ... m m
⇒ + + + = + = +...
...
xy
yx
M
22
+
=
B i 8.
126
Một số bài toán về cực trị - Ôn thi vào lớp 10
Cho
2 2 2
x 2y z 2xy 2yz zx 3x z 5 0+ + + + =
. Tớnh
3 7 2 010
S x y z= + +
Bi 105 .
Cho 2 số thực dơng x, y thoả ... minh rằng :
2 2
x y
x y
y x
+ +
140
Một số bài toán về cực trị - Ôn thi vào lớp 10
B i 9. Cho các số thực dơng x, y, z thỏa mãn x + y + z = 4 .
B i 10.
B i 11.
B i 12....
... MQ , tính BC theo R.
Bài 5: Cho
Rzyx
∈
,,
thỏa mãn :
zyxzyx
++
=++
1111
Hãy tính giá trị của biểu thức : M =
4
3
+ (x
8
– y
8
)(y
9
+ z
9
)(z
10
– x
10
) .
Đáp án
Bài 1: a). Điều kiện ... (d
3
) luôn đi qua với mọi giá trị của m.
b. Tìm m để ba đường thẳng (d
1
); (d
2
); (d
3
) đồng quy .
Bài 3: Cho phương trình x
2
- 2(m-1)x + m - 3 = 0 (1)
a. Chứng minh phương trình luô...