《2025年快乐过暑假江苏凤凰科学技术出版社八年级提优版》

6. 如图,过点$A(- 2,0)的直线l_1:y = kx + b与直线l_2:y = - x + 1交于点P(- 1,a)$.
(1)直接写出方程组$\begin{cases}y = kx + b,\\y = - x + 1\end{cases} $的解$\left\{\begin{array}{l} x=-1,\\ y=2\end{array}\right. $；
(2)求直线$l_1$对应的表达式$y=2x+4$；
(3)求$\triangle ABP$的面积3.

答案：
(1) $\left\{\begin{array}{l} x=-1,\\ y=2\end{array}\right. $
(2) $y=2x+4$
(3)3

1. I know him very well because we were neighbours for nearly 10 years in the past.
2. In most countries,people go to work on weekdays.
3. This new pair of binoculars will help you see the birds more clearly than before.
4. In an earthquake,a pig was still alive after living under the bricks and stones for 36 days.
5. The children went in the direction of the post office.

答案： 1. nearly 2. on weekdays 3. clearly 4. alive 5. direction

二 阅读理解
It’s necessary to teach your kids some safety rules so that they can know how to keep safe when they’re in danger.
Call 119
▲As soon as kids can read the numbers out,they can learn to call 119.
▲Tell them the danger of fire and teach them the differences between 119 and other calls.
▲Tell them the mobile phone isn’t for playing.
Swim Safely
★Keep the life jackets on and make sure kids don’t swim without their parents around them.
★Tell kids not to swim in deep water.
★Watch kids when they’re in or around water.
续表
Be Careful of Dogs
◆Carefully choose your pet dog at home.
◆Teach children some safety rules about dogs. Never get close to a strange dog.
◆If a dog runs after your kids,you need to tell them to keep calm.
1. When can parents teach their kids to call 119 according to the text?
A. When their kids can write numbers.
B. When their kids can play with phones.
C. When their kids are able to read numbers.
D. When their kids see the fire.
2. What is the writer’s advice for children to keep safe?
A. Don’t keep pets at home.
B. Learn to swim early.
C. Never play with dogs.
D. Wear life jackets while swimming.
3. What should a kid do if a dog runs after him?
A. Run faster at once.
B. Use something to beat the dog.
C. Stay calm.
D. Call 119 right away.

答案： 【文章大意】本文主要介绍了三条安全规则，让孩子们知道在危险的情况下如何保证安全。
1. C [解析]细节理解题。根据“As soon as kids can read the numbers out, they can learn to call 119.”可知，当孩子们能读数字时，就可以教他们拨打 119 了。故选 C。
2. D [解析]细节理解题。根据“Keep the life jackets on and make sure kids don't swim without their parents around them.”可知，游泳时要让孩子穿上救生衣，并且保证父母不在身边时不要独自游泳。故选 D。
3. C [解析]细节理解题。根据“If a dog runs after your kids, you need to tell them to keep calm.”可知，如果有狗追你的孩子，你要告诉他们保持冷静。故选 C。