题目内容
塑料是添加各种助剂，如填料，增塑剂，稳定剂，润滑剂，色料之后，在一定温度和压力下具有延展性，冷却后可以固定其形状的一类材料。
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Section ADirections:This section is to test your ability to give proper answers to questions. There are 5 recorded questions in it. After each question, there is a pause. The questions will be spoken two times. When you hear a question, you should decide on the correct answer from the four choices marked A, B, C and D given in your test paper. Then you should mark the corresponding letter on the Answer Sheet with a single line through the centre.
Section ADirections:This section is to test your ability to give proper answers to questions. There are 5 recorded questions in it. After each question, there is a pause. The questions will be spoken two times. When you hear a question, you should decide on the correct answer from the four choices marked A, B, C and D given in your test paper. Then you should mark the corresponding letter on the Answer Sheet with a single line through the centre.
Section ADirections:This section is to test your ability to give proper answers to questions. There are 5 recorded questions in it. After each question, there is a pause. The questions will be spoken two times. When you hear a question, you should decide on the correct answer from the four choices marked A, B, C and D given in your test paper. Then you should mark the corresponding letter on the Answer Sheet with a single line through the centre.
Section ADirections:This section is to test your ability to give proper answers to questions. There are 5 recorded questions in it. After each question, there is a pause. The questions will be spoken two times. When you hear a question, you should decide on the correct answer from the four choices marked A, B, C and D given in your test paper. Then you should mark the corresponding letter on the Answer Sheet with a single line through the centre.
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