（）4. — What's ? — a frog.

A.they; They're
B.it; it's
C.it; It's

4. C

【分析】本题考查英语中代词的用法和句子首字母大写规则。首先，问句中be动词为is，说明主语是单数，因此第一空需用单数代词it，排除复数代词they的A选项；其次，答句的首单词首字母必须大写，B选项的it's首字母小写不符合要求，C选项的It's符合规则，据此可得出答案。
【解析】1. 第一空：根据be动词is判断主语为单数，故用单数代词it，A选项they为复数，排除；2. 第二空：答句首字母需大写，B选项it's未大写，排除，因此选C。
【答案】C
【知识点】代词的用法；句子书写规则
【点评】本题是英语基础题型，主要考查单数代词的使用和句子首字母大写的细节，属于入门级考点，难度较低。
【难度系数】0.9

（）5. — Is it a cat? —

A.Yes, it's a dog.
B.No, it's a cat.
C.Yes, it's a cat.

5. C

【分析】这是英语一般疑问句的应答题，需明确“Is it...?”的回答规则：肯定回答为“Yes, it is.”，否定回答为“No, it isn't.”，同时要保证问答逻辑一致。逐一分析选项：A选项肯定回答却答“dog”，逻辑矛盾；B选项否定回答却答“cat”，逻辑矛盾；C选项肯定回答且内容与问句匹配，符合要求。
【解析】对于“Is it...?”的一般疑问句，肯定回答用“Yes, it is.”，否定回答用“No, it isn't.”。A项前后表述矛盾，B项前后表述矛盾，仅C项符合问答逻辑。
【答案】C
【知识点】一般疑问句的应答
【点评】本题考查英语基础的一般疑问句答语，需掌握问答的逻辑一致性，属于简单基础题型。
【难度系数】0.9

五 选择正确的句子补全对话。（有一项多余）
A. It has a big long tail.
B. It has two long ears.
C. What do ducks(鸭子) like?
D. What is it in the tree?
E. What are they in the river(河)?
Grandpa: Welcome to my farm!
Yangyang: Thank you, Grandpa. Your farm is so big.
Lele: I can see some animals on the farm. 1.
Grandpa: It's a squirrel. 2.
Lele: Are they rabbits?
Grandpa: Yes, they are. They like carrots.
Yangyang: Is that a dog?
Grandpa: Yes, it is.
Lele: 3.
Grandpa: They are ducks.
Yangyang: 4.
Grandpa: They like small fish.

1. D 2. A 3. E 4. C

【分析】
本题是补全对话类题目，需结合上下文的问答逻辑选择合适的句子。首先看第1空，答语是单数的动物“squirrel（松鼠）”，所以问句应是询问某个单数事物是什么；第2空，答语是松鼠，需选描述松鼠特征的句子；第3空，答语是复数的动物“ducks（鸭子）”，且提到“in the river”，所以问句是询问河里的复数事物是什么；第4空，答语是“喜欢小鱼”，所以问句是询问喜欢什么。
【解析】
1. 由答语“It's a squirrel.”可知，问句询问单数事物是什么，对应选项D“What is it in the tree?”，故选D；
2. 前文提到是松鼠，需描述松鼠的特征，选项A“It has a big long tail.”符合松鼠的特点，故选A；
3. 由答语“They are ducks.”可知，问句询问河里的复数事物是什么，对应选项E“What are they in the river?”，故选E；
4. 由答语“They like small fish.”可知，问句询问某物喜欢什么，对应选项C“What do ducks like?”，故选C。
【答案】1.D 2.A 3.E 4.C
【知识点】补全对话、情景交际
【点评】本题为小学英语情景交际类补全对话题，核心考查学生对上下文问答逻辑的理解，难度较低，只要理清对话的问答关系即可正确作答。
【难度系数】0.8

六 阅读短文，选择正确的答案。
I'm Ann. I have a friend at my house(房子). It's a cat. Its name is Mimi. It's white and yellow. I play with it after school. It likes playing with balls. My friends, Mary and Alice, come to see it, but it is under(在……下面) the sofa(沙发). So they can't see it. In the evening, I must study at my desk, but it is on the desk too. At that time, I put it down.
() 1. Mimi is the name of a .
A. boy
B. girl
C. cat
() 2. Who's Ann's friend at her house?
A. Mary.
B. Alice.
C. Mimi.
() 3. Can Ann's friends see her cat at her house?
A. Yes, they can.
B. No, they can't.
C. We don't know.
() 4. Ann plays with after school.
A. balls
B. Mimi
C. friends

1. C 2. C 3. B 4. B

【分析】
做这类英语阅读理解选择题，需先通读短文把握大意，再针对每个小题的问题，回到短文中定位相关语句，对比选项选出正确答案。具体需对应每个小题的问题，查找原文中关于Mimi的身份、Ann家的朋友、朋友能否看到猫、Ann放学后玩伴的关键信息。
【解析】
1. 由短文第3句“It's a cat. Its name is Mimi.”可知，Mimi是猫的名字，故选C；
2. 由短文前4句“I have a friend at my house. It's a cat. Its name is Mimi.”可知，Ann家里的朋友是Mimi，故选C；
3. 由短文“Mary and Alice, come to see it, but it is under the sofa. So they can't see it.”可知，Ann的朋友看不到猫，故选B；
4. 由短文“I play with it after school.”可知，句中“it”指代前文的猫Mimi，即Ann放学后和Mimi玩，故选B。
【答案】
1.C 2.C 3.B 4.B
【知识点】
英语阅读理解（细节理解），代词指代
【点评】
本题为英语阅读理解基础细节题，侧重考查学生从短文中定位并提取关键信息的能力，题目设置简单，只要认真阅读短文即可轻松解答。
【难度系数】
0.8