用“↑”或“↓”标出下列句子的语调。
( )1. D yu thrw rubbish n the flr, Bbby?
( )2. Wang Bing puts his rubbish in the bin.
( )3. Can we keep ur city clean and beautiful?
( )4. Yes, we can!
( )5. Did yu visit yur grandparents last weekend?
从方框中选择合适的单词，并用其适当形式填空。
1.My grandfather n the sfa and watching TV nw.
2.What the river dirty?
3.There many peple in the playgrund yesterday.
4.Dn’t rubbish in the classrm. We shuld keep it clean.
5.T keep the air clean, we can mre trees.
6.My mther t wrk every mrning.
根据所给首字母提示填空。
1. Be c !There is a banana skin n the g . Let me pick it up.
2. The rubbish and the tys m the bedrm messy and d .
3. The river was nt clean. There were a lt f d fish in it.
4. P mre trees can help keep the air clean.
5. Billy slips n a banana skin and f . He's in hspital nw.
6. Yu s thrw yur rubbish n the flr, Willy.
7. We can see many ld and interesting things in the m .
8. G and ask Sam fr help. He always has sme gd i .
用所给词的适当形式填空。
1. Yu cleaned the huse, Gerge. Well (d)!
2. There (nt be) any rubbish in the bin yesterday.
3. We can put the rubbish in the bin (keep) ur classrm clean.
4.—Wh (make) the bedrm dirty?
—The by ver there. He ate bananas in it just nw.
5. Bbby ften (thrw) fruit skins n the flr.
单项选择。
( )1. We can plant mre trees. They the air clean.
A. help keeping B. helps t keep C. help keep
( )2. Tim, yu can't thrw the banana skin n the grund. !
A. Pick up it B. Pick it up C. Thrw it up
( )3. We shuld the secret file(秘密档案) in the right place.
A. put B. puts C. t put
( )4.I like the city. Wuld yu like the city?
A. living in; living in B. living in; t live in C. live in; t live in
( )5. Lk! The hamsters(仓鼠) n the chairs.
A. is sitting B. are sitting C. sits
根据上下文及首字母提示完成短文。
Pllutin is a very serius prblem tday. Lk at the rivers. They are d and smelly (发出难闻气味的). The fish are d . Lk at the sky. It is dark and dirty. There are many f a us. They m a lt f gds, but they make a lt f smelly and d water t. In Japan, sme peple sell clean air. Why? Because there is less and less(越来越少) clean a in Japan. All f us s d smething t h keep ur city c .
阅读理解。
It's March 12th. It's Tree Planting Day. There are many peple n the hill. They're planting trees. Plants are very imprtant t peple. They can make fd frm air, water and sunlight. Animals and peple can get fd frm plants. Withut plants, life(生命) will nt g n. Plants can make air clean. They can keep the water frm flwing away(流失). And they can stp the wind frm blwing up sand and earth.
But sme peple are cutting dwn many trees. This brings abut(引起) flds(洪水) and sandstrms(沙尘暴). Tday mre peple knw plants are imprtant. They will plant mre trees and ther plants. They will d their best(尽力) t make ur cuntry mre beautiful.
阅读短文，选择正确的答案。
( )1. Tree Planting Day is n the f March.
A. twentieth B. twelfth C. secnd
( )2. can make fd frm air, water and sunlight.
A. Plants B. Animals C. Peple
( )3. Life needs t g n.
A. fd frm plants B. animals C. sand
( )4. What can plants d?
A. They can make the air clean and stp the wind frm blwing up sand and earth.
B. They can keep the water frm flwing away.
C. Bth A and B.
( )5. peple will d their best t make ur cuntry beautiful.
A. Few B. Mre and mre C. N
参考答案
第四课时 Checkut time—Ticking time
一、1.↑ 2.↓ 3.↑ 4.↓ 5.↑
二、1.is sitting 2.makes 3.were 4.litter 5.plant 6.walks
三、1.careful, grund 2.make, dirty 3.dead 4.Planing 5.falls 6.shuldn’t
7.museum(s) 8.ideas
四、1. dne 2. wasn't 3. t keep 4. made5. thrws
五、1.C 解析：help (t) d sth.是固定搭配，意为“帮助某人做某事”；且词句的主语they是第三人称复数，后面的谓语动词要用原形。故选C。
2. B 3. A 4. B 5. B
六、dirty, dead, factries, arund, make, dirty,air, shuld, help, clean
七、1.B解析：由第一段中“It’s March 12th. It’s Tree Planing Day.”可知，植树节在三月十二日。故选B。
2. A 解析: 由第一段中“Plants are very imprtant t peple. They can make fd frm
air, water and sunlight.”可知,植物可以从空气、水和阳光中制造出食物。故选 A。
3. A 解析:由第一段中“Withut plants, life will nt g n.”可知,没有植物,生命将难以继续。故选 A。
4. C 解析:由第一段中“Plants can make air clean ... frm blwing up sand and earth.”可知，植物既可以净化空气，又可以防止水土流失。故选C。
5. B 解析:由第二段中“Tday mre peple knw plants are imprtant ... They will d their best t make ur cuntry mre beautiful.”可知，今天越来越多的人了解到植物的重要性，并将尽全力使我们的国家变得更漂亮。故选B。
walk make be littering sit plant