铜导线一次短路熔珠孔洞内表面碳元素的含量较二次短路（）。
A、低
B、高
C、相同
D、无固定规律
参考答案：A
读短文，把正确的序号填在括号里。
A picture
Hello! I'm Tom. I have a picture. In the picture I can see a sheep in a white shirt, a dog in a red dress, a pig
in pink shorts, and a cat in yellow socks. They are playing on the farm. I like the picture.
1. How many animals do you see in the picture?
A. 3
B. 4
C. 5
D. 6
2. I can see _____________ in a red dress.
A. a sheep
B. a dog
C. a pig
D. a cat
3. I can see _____________ in a white shirt.
A. a pig
C. a sheep
4. What are they doing?
A. They are playing.
B. They are reading.
C. They are singing.
D. They are sitting.
5. Does Tom like the picture?
A. Yes, he does.
B. No, he doesn't.
C. No, he does.
D. Yes, he doesn't.
