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【单选题】
标注正方形尺寸可用“边长X边长”前加什么符号？A.
△
B.
☆
C.
◇
D.
□
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
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【单选题】听力原文：(A)They're setting the table for a meal. (B) They're concentrating on some documents. (C) They're taking off their glasses. (D)They're taking their seats for a meeting.
A.
B.
C.
【简答题】过共晶白口铸铁碳的质量分数为 ，其室温组织为 。
【简答题】听力原文：(A) They're shaking hands. (B) They're moving some chairs. (C) They're playing a . (D) They're posting something on the board.
【单选题】听力原文：(A) They're standing in a line. (B) They're studying a map. (C) They're buying some magazines. (D) They're looking at the same book.
A.
B.
C.
【简答题】亚共晶白口铸铁碳的质量分数为 ，其室温组织为 。
【单选题】A: You're thirsty? There are some cans of Coke in the fridge.B: ______
A.
Some cans of Coke in the fridge? It's terrific.
B.
Don't worry. You're forgotten to put it in the fridge.
C.
I don't mind I'm thirsty.
D.
Some cans of Coke in the fridge? It's terrible.
【单选题】听力原文：(A) They're signing some forms. (B) They're standing next to the sign. (C) They're putting up signs. (D) A man is pointing into the distance.
A.
B.
C.
D.
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