人教版九年级全一册 Unit 13 We're trying to save the earth!Section A 3a-4c 习题训练课件 (共29张PPT)

(共29张PPT)
Unit 13 We’re trying to save the earth!
第2课时 Section A （3a-4c）
Ⅰ.根据句意及汉语提示写出所缺的单词
1.I think it’s _______ （残忍的） of them to shoot the animals and birds.
cruel
2.In the past the villagers couldn’t ________（买得起） food for themselves, but now they all have enough food and live happily with the help of the government.
afford
3.[2022泰安] Spacewalks can be dangerous. There is no air in space. And it’s filled with _________（有害的） radiation（辐射）.
harmful
4.The bag is made of __________ （可重复使用的） paper and can be recycled.
reusable
5.About 70 million sharks are traded in this __________（行业） every year.
industry
Ⅱ.根据汉语意思完成句子
6.他们在山顶发现了一座古老的庙宇。
They found an old temple ____ _____ ______ _____ the mountain.
at
the
top
of
7.她不能再忍受这里的噪声了。
She can _____ ________ stand the noise here.
no
longer
8.我们都应该记住，拯救地球从小事做起。
All of us should remember that ________ the earth ________ _______ small things.
saving
begins
with
9.该采取行动了,但我们还没有做好准备。
It’s time to ______ ________, but we haven’t got ready.
take
action
10.不仅他父母，而且他也喜欢这首歌。
______ _______ his parents ______ ______ he _______ the song.
Not
only
but
also
likes
Ⅲ.单项选择
11.[2022达州] —We need more time to see how things develop before we ____.
—I agree with you.( )
A. take after B. take action
C. take turns D. take away
[解析] 考查动词短语辨析。句意：“在采取行动之前，我们需要更多的时间看看事态的发展。”“我同意你的看法。”take after意为“与……相像”；take action意为“采取行动”；take turns意为“轮流”；take away意为“拿走”。故选B。
[答案] B
12.[2021云南] The earth is in great danger now. We have to do something ____ it. ( )
A. protect B. protecting C. to protect D. protected
C
[解析] 句意：地球现在处于极大的危险之中，我们必须采取措施保护它。句中用不定式短语to protect it作目的状语。故选C。
13.[2020大庆] It’s a good habit to ____ the lights before leaving the classroom.( )
A. go on B. go off C. turn on D. turn off
D
[解析] go on意为“继续”；go off意为“（闹钟）发出响声”；turn on意为“打开”；turn off意为“关掉”。句意：离开教室前关灯是一个好习惯。由句意可知选D。
14.[2021齐齐哈尔] —I saw Alice walk into that building just now.
—Oh, it’s our new city museum. It ________ to the public for a month.( )
A. has been opened B. has been open C. has opened
B
15.—Why does Tom know so many things
—Because he ____ reads many books， ____ remembers what he has read.( )
A. not; but B. not only; but also
C. neither; nor D. either; or
[解析] 考查连词用法。not…but意为“不是……而是”；not only…but also意为“不但……而且”；neither…nor意为“既不……也不”；either…or意为“或者……或者”。句意：“为什么汤姆知道如此多的事情？”“因为他不仅读许多书而且记得他所读的内容。”根据句意可知选B。
[答案] B
16.The number of the volunteers ____ 100 now. And a small number of them ________ already gone to the workplace.( )
A. is; have B. are; have C. is; are D. is; has
A
[解析] 考查主谓一致。the number of表示“……的数量”，作主语时，be动词用单数；而a number of表示“大量的”，作主语时，谓语动词用复数。故选A。
Ⅳ.完形填空
For centuries, writers and film-makers have described wolves as big, bad killers. The . .17. . is that humans have hurt wolves a lot more than they’ve hurt us.
Gray wolves once lived in North America. Native Americans admired and . .18. . them. Then European people came to the area. They killed many of the wolves’ favorite . .19. ., such as deer and moose（驼鹿）.
The hungry wolves began eating sheep and cows. People became . .20. . and began killing them. The government even paid people who killed a wolf！The wolves were never . .21. . in Alaska. But by the 1960s, hunting had . .22. . killed off the gray wolves in many places. They lived only in a small corner of Minnesota.
In 1973, the US government passed a law. The law protects plants and animals in danger. The law made it illegal（非法的） to kill or harm gray wolves.
Because of this, the wolf population is . .23. .. More than 3,000 wolves now live in Michigan, Minnesota, and Wisconsin. The government wants to take them off the endangered species . .24. . in some states.
Most people agree that the increase in the number of wolves is good news. But some people worry that . .25. . the government does so, people will begin to kill wolves again soon.
Wolves are . .26. . to ecosystems. By hunting animals such as deer, wolves help to keep ecosystems balanced（平衡的）.
【主旨大意】灰狼对于生态系统很重要，人类应该保持生态平衡。
17.( )A. problem B. truth
C. decision D. agreement
B
[解析] 考查名词辨析。problem意为“问题”；truth意为“事实”；decision意为“决定”；agreement意为“协议”。根据上下文可知，此句表达的是人类对狼的伤害比狼对我们的伤害要大得多的事实。
18.( )A. grew B. found C. protected D. pushed
C
[解析] 考查动词辨析。grow意为“种植”；find意为“找到”；protect意为“保护”；push意为“推搡；敦促”。由本句中的“admired and”可推知答案为protected。
19.( )A. leaders B. enemies C. friends D. meals
D
[解析] 考查名词辨析。leader意为“首领”；enemy意为“敌人”；friend意为“朋友”；meal意为“饭；餐”。句意：他们杀死了很多灰狼最喜欢的食物，比如鹿和驼鹿。故选D。
20.( )A. excited B. surprised
C. angry D. nervous
C
21.( )A. in danger B. in total
C. in peace D. in order
A
[解析] 考查介词短语辨析。in danger意为“处于危险中”；in total意为“总计”；in peace意为“和平地”； in order意为“按顺序”。句意：在阿拉斯加州狼群从来没有处于危险中。故选A。
22.( )A. widely B. nearly
C. lately D. comfortably
B
23.( )A. disappearing B. increasing
C. dropping D. crying
[解析] 考查动词辨析。disappear意为“消失”；increase意为“增长”；drop意为“掉落”；cry意为“哭泣”。根据上一段可知，1973年，美国政府通过了一项法律，这是一项保护濒危动植物的法律。灰狼也受到保护，所以它们的数量会增长。故选B。
[答案] B
24.( )A. chain B. list C. industry D. market
B
25.( )A. while B. although C. unless D. if
D
26.( )A. important B. strange
C. pretty D. ugly
A
[解析] 考查形容词辨析。important意为“重要的”；strange意为“奇怪的”；pretty意为“漂亮的”；ugly意为“丑陋的”。句意：灰狼对于生态系统是很重要的。故选A。
Ⅴ.短文填空
阅读短文，从方框中选择适当的单词并用其正确形式填空，使短文通顺、意思完整。每空限填一词，每词限用一次。
before, park, money, usually, be,
pollute, go, carry, one, slow
A kind of little cars may take the place of today’s big ones someday. People will like this kind of small cars more and more. The car is as small as a bike but can27._______ two people in it. Everybody can drive it, just like riding a bike. Even children and old people can drive them to schools and28._______.
carry
parks
If everyone drives such a car in the future, there will be less29.__________ in the air. There will also30._____ more space for all the cars in cities, and the streets will have more space for people to walk. Three such cars can fit in the space now needed for one car of the 31._______ size. The little cars of the future will cost much less32.________ to own and to drive. And they can go only 65 kilometers an hour, so driving will be safer, too.
pollution
be
usual
money
The cars of the future will be fine for33.________ around a city, but they will not be useful for a long trip. This kind of cars can save a lot of gasoline（汽油）. They will go 450 kilometers 34.________ needing to stop for more gasoline.
If big cars are still used along with the small35._______, two sets of roads will be needed in the future. Some roads will be needed for the big, faster cars and other roads will be needed for the small,36.________ cars.
going
before
ones
slower