《2025年快乐过暑假江苏凤凰科学技术出版社七年级提优版》

5. 如图,$∠AOC= 80^{\circ}$,$OB是∠AOC$的平分线,$OD是∠COE$的平分线.
(1)求$∠BOC$的度数；40°
(2)若$∠DOE= 30^{\circ}$,求$∠BOE$的度数.100°

答案：
(1)
∵∠AOC=80°，OB 是∠AOC 的平分线，
∴∠BOC=$\frac{1}{2}$∠AOC=$\frac{1}{2}$×80°=40°．
(2)
∵OB 是∠AOC 的平分线，OD 是∠COE 的平分线，∠AOC=80°，∠DOE=30°，
∴∠BOC=$\frac{1}{2}$∠AOC=40°，∠COE=2∠DOE=60°，

1. —Do you think her red blouse ______ her blue jeans, Tom?
—Yes, I think so. And they also ______ her very well.
(A)
A.matches; fit
B.matches; fits
C.fits; matches
D.fits; match

答案： A

2. —Young people like “dopamine dressing”.
—It uses ______C colours like red and yellow to make people feel happy.

A.dark
B.light
C.bright
D.cool

答案： C

3. I often C my weekend with my grandparents in the village.
A.change
B.break
C.spend
D.choose

答案： C

4. —Spring is a good time for setting goals.—That’s true. The whole year’s work ______Da good start in spring.
A.carries out
B.leads to
C.makes up
D.depends on

答案： D

5. There B a pair of trousers on the bed.
A.are
B.is
C.have
D.has

答案： B

二 阅读还原(有一项多余)
Different people like different colours. Wearing different colours of clothes shows different moods(情绪). Colours have great effects on(影响) your moods. If we’re sad, we usually choose to wear dark colours. If we’re happy, we often wear bright colours. So, how can colours affect our moods? What colour should we wear? 1D
If you are feeling sad, don’t wear black. It will make you feel worse, not better. 2C Red can make you feel more excited. Orange can make you happier. Green makes you feel peaceful and energetic.
3B It can also make you think better and get good ideas. Yellow is good for your study. You can be smarter if you are in yellow. Some students use yellow pens, rubbers and rulers because they hope to do well in exams. White shows purity(纯洁) and peace, so wearing white makes you feel calmer.
4F Black can make you graceful or mature(成熟的). It seems that introverted(内向的) people like black better because it is a protecting colour. People in black seem to be serious(严肃的).
5A Try to wear bright colours to make yourself happy.
A. Colours can change your mood.
B. Blue is a calm colour and it makes you feel relaxed.
C. If you choose red, orange and green, it will be better.
D. Here is some advice for you.
E. First of all, choose a colour you like best.
F. When you see someone wearing black, you can feel safer.

答案： 1. D 2. C 3. B 4. F 5. A